UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-CSR

   CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES

                  Investment Company Act file number 811-06495
                                                    ------------------

       FLAHERTY & CRUMRINE PREFERRED INCOME OPPORTUNITY FUND INCORPORATED
     -----------------------------------------------------------------------
               (Exact name of registrant as specified in charter)

                      301 E. Colorado Boulevard, Suite 720
                               PASADENA, CA 91101
     -----------------------------------------------------------------------
               (Address of principal executive offices) (Zip code)

                               Donald F. Crumrine
                            Flaherty & Crumrine Inc.
                      301 E. Colorado Boulevard, Suite 720
                               PASADENA, CA 91101
     -----------------------------------------------------------------------
                     (Name and address of agent for service)

        registrant's telephone number, including area code: 626-795-7300
                                                           ---------------

                      Date of fiscal year end: NOVEMBER 30
                                               ------------------

                   Date of reporting period: NOVEMBER 30, 2005
                                             -------------------

Form N-CSR is to be used by management investment companies to file reports with
the Commission not later than 10 days after the  transmission to stockholders of
any report that is required to be transmitted to  stockholders  under Rule 30e-1
under the Investment Company Act of 1940 (17 CFR 270.30e-1).  The Commission may
use the information provided on Form N-CSR in its regulatory, disclosure review,
inspection, and policymaking roles.

A registrant  is required to disclose the  information  specified by Form N-CSR,
and the  Commission  will make this  information  public.  A  registrant  is not
required to respond to the  collection  of  information  contained in Form N-CSR
unless the Form  displays a  currently  valid  Office of  Management  and Budget
("OMB")  control number.  Please direct comments  concerning the accuracy of the
information  collection  burden  estimate and any  suggestions  for reducing the
burden to  Secretary,  Securities  and Exchange  Commission,  100 F Street,  NE,
Washington,  DC 20549. The OMB has reviewed this collection of information under
the clearance requirements of 44 U.S.C. ss. 3507.





ITEM 1. REPORTS TO STOCKHOLDERS.

The Report to Shareholders is attached herewith.

FLAHERTY & CRUMRINE PREFERRED INCOME
OPPORTUNITY FUND



To the Shareholders of the Flaherty & Crumrine Preferred Income Opportunity Fund
("PFO"):

     During the fourth fiscal  quarter of 2005 which ended on November 30, 2005,
the Fund's  total return on net asset value was  -2.4%(1).  While this result is
disappointing,  the  return for all of fiscal  2005 was a much more  respectable
+6.4%(1).  Most  importantly,  as the table below shows,  the Fund has delivered
consistently strong returns over the long run.


--------------------------------------------------------------------------------
                   TOTAL RETURN PER YEAR ON NET ASSET VALUE(1)
                       FOR PERIODS ENDED NOVEMBER 30, 2005
                                                                          ONE        FIVE         TEN      LIFE OF
                                                                         YEAR        YEARS       YEARS     FUND(2)
                                                                         --------   --------   --------    --------
                                                                                                  
      Flaherty & Crumrine Preferred Income
         Opportunity Fund............................................    6.4%        10.8%        8.9%        9.8%
      Lipper Domestic Investment Grade Bond Funds(3) ................    3.7%         7.1%        6.7%        7.0%

----------------
(1)  Based on data  published by Lipper Inc. in each  calendar  month during the
     relevant  periods.  Distributions  are assumed to be  reinvested  at NAV in
     accordance with Lipper's  practice,  which differs from the procedures used
     elsewhere in this report.
(2)  Since inception on February 13, 1992.
(3)  Includes  all U.S.  Government  bond,  mortgage  bond and  term  trust  and
     investment  grade bond funds in Lipper's  closed-end  fund database at each
     point in time.


--------------------------------------------------------------------------------
     Negative returns of the magnitude  experienced during the past quarter have
been rare for PFO. Of the 55 quarters since the inception of the Fund,  only six
have  produced a return below that of this past  quarter;  in fact,  only eleven
quarters had a negative return.  Of course,  past performance is not a guarantee
of future results.

     As we began the last fiscal quarter, long term interest rates were hovering
near their all-time lows of 4 1/4%; by quarter's end, these same rates were just
below 4 3/4%.  As a result,  the total return  (price change plus income) of the
30-year US  Treasury  bond for the quarter  was -4.9%.  During the  period,  the
Fund's interest rate hedging strategy performed as designed by making money when
long-term  interest  rates  increased.  These gains,  however,  did not entirely
offset the decline in value of the Fund's investment portfolio, and as a result,
the overall  performance  was still  negative  (please see the Question & Answer
section which follows for more on the performance of the Fund's hedges).

     As we've discussed often in the past,  setting the Fund's monthly  dividend
amount entails careful analysis based partially on some crystal ball gazing. The
Board  recently  acted on  management's  recommendation  to continue the current
monthly  dividend  amount of $0.0705 per share.  In a period  when most  similar
funds have been  forced to pare back  distributions,  this is a very  satisfying
result.  While PFO is not immune to the forces  affecting  other  funds,  it has
benefited from efforts to boost portfolio income through  securities  selection;
in addition,  the Fund's use of  tax-benefited  preferred  stock as leverage has
been  more  cost-effective  than  the  taxable  preferreds  used by  many  other
closed-end income funds because it offers some investors certain tax advantages.



     There have been some small but important  changes in the Fund's  investment
portfolio  during recent months.  As can be seen from the Portfolio  Overview on
page 7, utilities comprise 38% of the portfolio. This figure was 44% as recently
as six months  ago.  The drop  reflects  the fact that  several  utilities  have
redeemed preferred shares and these have not been replaced with new issues.

     The Fund must  normally  have at least 25% of its  assets  invested  in the
utility  industry,  so we are  focusing  on the  shrinking  universe  of utility
preferreds.  Historically, preferred stock has been a standard form of financing
for utility companies.  In recent years, changes in the regulatory  environment,
industry consolidation,  limited capital expenditure,  and the repeal of certain
federal laws, have all led to the reduction of the size of the utility preferred
universe.  While  these  changes  have been  generally  positive  for the Fund's
investments,  the  long-term  trend may  present  challenges  in finding  enough
suitable utility preferreds.

     A  number  of  insurance  companies  issued  new  preferred  securities  to
replenish capital after one of the worst hurricane seasons on record. While many
of these new issues  didn't meet our credit  standards,  we  identified  several
attractive issues and made meaningful additions to the portfolio.  We also added
positions in new preferred  securities  issues of several high quality companies
in the  financial  services  industry.  Among the recent  additions  are Goldman
Sachs,  Merrill  Lynch and HSBC,  which joined our  existing  holdings of Lehman
Brothers.

     Recently,  an innovative twist on an old preferred structure has produced a
new type of preferred  security.  In classic Wall Street tradition,  the bankers
can't agree on what to call them;  for now,  we'll use the first coined  acronym
"ECAPS (SM)," which stands for "Enhanced Capital Advantage Preferred  Security."
These new issues  combine a variety of terms and  covenants to create a security
that  captures  some  important  characteristics  of both debt and equity.  As a
result, the issues are considered  "equity-like" by the rating agencies, yet the
interest paid on the issue is  deductible by the issuer as interest  expense for
tax purposes (both critical factors in a company's cost of capital).  Please see
the Q&A section for more on ECAPS (SM) and their impact on the Fund.

     Perhaps  because so many  income-oriented  closed-end  funds have cut their
distributions,  the market prices of most of those funds have fallen relative to
their net asset  values.  On August 31,  2005,  the market price of PFO was 6.6%
above the NAV, and by December 30th, it was 9.4% below the NAV.  However,  as of
this writing,  the market price had increased to 3.3% above the NAV. We've often
said that in a perfect  world the market price would  closely track the NAV, but
this is rarely the case.  Whatever  the cause of this  disparity,  investors  in
closed-end  funds  should  always have a long-term  investment  horizon and stay
focused on the NAV performance.

     We  hope   investors   will  take   advantage   of  the   Fund's   website,
WWW.PREFERREDINCOME.COM.  It  contains  a wide  range of useful  and  up-to-date
information about the Fund.

     Sincerely,

     /S/DONALD F. CRUMRINE                  /S/ROBERT M. ETTINGER
     Donald F. Crumrine                     Robert M. Ettinger
     Chairman of the Board                  President

     January 20, 2006


                                       2



                               QUESTIONS & ANSWERS

WHY HAS THE MARKET PRICE OF THE FUND'S SHARES BEEN FALLING?

     Shareholders are  understandably  concerned about the recent decline in the
price of the Fund's  shares.  While our focus is primarily on managing the Fund,
we realize that an investor's actual return is comprised of the monthly dividend
payments plus changes in the market price of the Fund.  During the fourth fiscal
quarter,  the Fund's total return on MARKET VALUE was -13.1%.  For all of fiscal
2005, the return was -8.4%. Over the life of the Fund, the return was +9.2%.

     We've often said that in a perfect  world the market  price  would  closely
track the net asset  value;  however,  as seen in the chart  below,  in the real
world the deviations  can be large.  In our  experience,  periods of large price
drops have displayed similar  patterns.  Usually some catalyst sets off a bit of
selling  which in turn leads to a cycle of  stop-loss  triggers and a "sell now,
ask  questions  later"  mood  among  investors.  The  triggers  this time  could
potentially  be  explained by rising  short-term  interest  rates,  year-end tax
selling, and competition from new closed-end fund offerings.
--------------------------------------------------------------------------------
           FLAHERTY & CRUMRINE PREFERRED INCOME OPPORTUNITY FUND (PFO)
            PREMIUM/DISCOUNT OF MARKET PRICE TO NAV THROUGH 12/31/05

                                [GRAPHIC OMITTED]
     EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC AS FOLLOWS:

Date     Prem/Disc
12/28/90
1/4/91
1/11/91
1/18/91
1/25/91
2/1/91
2/8/91
2/15/91
2/22/91
3/1/91
3/8/91
3/15/91
3/22/91
3/29/91
4/5/91
4/12/91
4/19/91
4/26/91
5/3/91
5/10/91
5/17/91
5/24/91
5/31/91
6/7/91
6/14/91
6/21/91
6/28/91
7/5/91
7/12/91
7/19/91
7/26/91
8/2/91
8/9/91
8/16/91
8/23/91
8/30/91
9/6/91
9/13/91
9/20/91
9/27/91
10/4/91
10/11/91
10/18/91
10/25/91
11/1/91
11/8/91
11/15/91
11/22/91
11/29/91
12/6/91
12/13/91
12/20/91
12/27/91
1/3/92
1/10/92
1/17/92
1/24/92
1/31/92
2/7/92
2/14/92
2/21/92  0.0726
2/28/92  0.0805
3/6/92   0.0874
3/13/92  0.098
3/20/92  0.0819
3/27/92  0.0556
4/3/92   0.0538
4/10/92  0.0705
4/17/92  0.0547
4/24/92  0.059
5/1/92   0.0546
5/8/92   0.0536
5/15/92  0.0306
5/22/92  0.0248
5/29/92  0.0307
6/5/92   0.0181
6/12/92  0.04
6/19/92  0.0357
6/26/92  0.0442
7/3/92   0.0475
7/10/92  0.0626
7/17/92  0.08
7/24/92  0.0592
7/31/92  0.0647
8/7/92   0.0613
8/14/92  0.0628
8/21/92  0.0514
8/28/92  0.0539
9/4/92   0.0409
9/11/92  0.0684
9/18/92  0.0572
9/25/92  0.0539
10/2/92  0.062
10/9/92  0.0675
10/16/92 0.049
10/23/92 0.0188
10/30/92 0.0474
11/6/92  0.018
11/13/92 0.0188
11/20/92 0.0408
11/27/92 0.0844
12/4/92  0.063
12/11/92 0.0515
12/18/92 0.0691
12/25/92 0.0638
1/1/93   0.0621
1/8/93   0.0679
1/15/93  0.0595
1/22/93  0.0434
1/29/93  0.0475
2/5/93   0.0483
2/12/93  0.0284
2/19/93  0.0202
2/26/93  0.031
3/5/93   0.0473
3/12/93  0.0651
3/19/93  0.0303
3/26/93  0.036
4/2/93   0.0514
4/9/93   0.0675
4/16/93  0.057
4/23/93  0.0853
4/30/93  0.0651
5/7/93   0.0513
5/14/93  0.061
5/21/93  0.057
5/28/93  0.0441
6/4/93   0.0497
6/11/93  0.0561
6/18/93  0.0497
6/25/93  0.0417
7/2/93   0.0472
7/9/93   0.0425
7/16/93  0.0362
7/23/93  0.0068
7/30/93  0.0306
8/6/93   0.0212
8/13/93  0.0181
8/20/93  0.0008
8/27/93  0.037
9/3/93   0.0331
9/10/93  0.0401
9/17/93  0.0338
9/24/93  0.0244
10/1/93  0.0214
10/8/93  0.0261
10/15/93 0.0263
10/22/93 0.0246
10/29/93 0.009
11/5/93  0
11/12/93 -0.0107
11/19/93 -0.0282
11/26/93 -0.0179
12/3/93  -0.0076
12/10/93 -0.0334
12/17/93 -0.0338
12/24/93 -0.0431
12/31/93 0.0249
1/7/94   -0.0036
1/14/94  0.0157
1/21/94  -0.023
1/28/94  -0.0377
2/4/94   -0.0323
2/11/94  -0.0361
2/18/94  -0.0863
2/25/94  -0.05
3/4/94   -0.0392
3/11/94  -0.0315
3/18/94  -0.0585
3/25/94  -0.0562
4/1/94   -0.0556
4/8/94   -0.0612
4/15/94  -0.0771
4/22/94  -0.1012
4/29/94  -0.1145
5/6/94   -0.0775
5/13/94  -0.0633
5/20/94  -0.0636
5/27/94  -0.0312
6/3/94   -0.0683
6/10/94  -0.0288
6/17/94  -0.0457
6/24/94  -0.0393
7/1/94   -0.0409
7/8/94   -0.045
7/15/94  -0.049
7/22/94  -0.0294
7/29/94  -0.0327
8/5/94   -0.0221
8/12/94  -0.0303
8/19/94  -0.0269
8/26/94  -0.0348
9/2/94   -0.0204
9/9/94   -0.0318
9/16/94  -0.0409
9/23/94  -0.0628
9/30/94  -0.062
10/7/94  -0.1322
10/14/94 -0.1149
10/21/94 -0.141
10/28/94 -0.104
11/4/94  -0.0786
11/11/94 -0.0976
11/18/94 -0.099
11/25/94 -0.077
12/2/94  -0.0402
12/9/94  -0.0868
12/16/94 -0.0732
12/23/94 -0.0604
12/30/94 -0.0851
1/6/95   -0.001
1/13/95  -0.0141
1/20/95  -0.0303
1/27/95  -0.0619
2/3/95   -0.0119
2/10/95  -0.0314
2/17/95  -0.0702
2/24/95  -0.0376
3/3/95   -0.0297
3/10/95  -0.0585
3/17/95  -0.0523
3/24/95  -0.0534
3/31/95  -0.0393
4/7/95   -0.0341
4/14/95  -0.0393
4/21/95  -0.069
4/28/95  -0.0341
5/5/95   -0.0576
5/12/95  -0.0501
5/19/95  -0.0933
5/26/95  -0.0753
6/2/95   -0.0481
6/9/95   -0.0729
6/16/95  -0.0702
6/23/95  -0.0749
6/30/95  -0.0686
7/7/95   -0.069
7/14/95  -0.0869
7/21/95  -0.1087
7/28/95  -0.0911
8/4/95   -0.0973
8/11/95  -0.1018
8/18/95  -0.1011
8/25/95  -0.078
9/1/95   -0.0706
9/8/95   -0.0833
9/15/95  -0.071
9/22/95  -0.0749
9/29/95  -0.0641
10/6/95  -0.0718
10/13/95 -0.1006
10/20/95 -0.0909
10/27/95 -0.1012
11/3/95  -0.1232
11/10/95 -0.0962
11/17/95 -0.1071
11/24/95 -0.1093
12/1/95  -0.1014
12/8/95  -0.1277
12/15/95 -0.1233
12/22/95 -0.1265
12/29/95 -0.1454
1/5/96   -0.1197
1/12/96  -0.1279
1/19/96  -0.1312
1/26/96  -0.1146
2/2/96   -0.1233
2/9/96   -0.1233
2/16/96  -0.1279
2/23/96  -0.1303
3/1/96   -0.1124
3/8/96   -0.1465
3/15/96  -0.1508
3/22/96  -0.1487
3/29/96  -0.1515
4/5/96   -0.1315
4/12/96  -0.1286
4/19/96  -0.1279
4/26/96  -0.1383
5/3/96   -0.1257
5/10/96  -0.113
5/17/96  -0.1408
5/24/96  -0.1386
5/31/96  -0.1386
6/7/96   -0.1255
6/14/96  -0.1337
6/21/96  -0.1301
6/28/96  -0.0918
7/5/96   -0.1079
7/12/96  -0.0911
7/19/96  -0.1122
7/26/96  -0.0939
8/2/96   -0.0876
8/9/96   -0.0688
8/16/96  -0.0673
8/23/96  -0.0881
8/30/96  -0.0836
9/6/96   -0.0836
9/13/96  -0.0661
9/20/96  -0.0889
9/27/96  -0.0991
10/4/96  -0.0876
10/11/96 -0.0876
10/18/96 -0.0935
10/25/96 -0.0834
11/1/96  -0.0796
11/8/96  -0.0932
11/15/96 -0.0726
11/22/96 -0.0586
11/29/96 -0.0608
12/6/96  -0.0792
12/13/96 -0.0813
12/20/96 -0.1009
12/27/96 -0.0837
1/3/97   -0.0693
1/10/97  -0.0562
1/17/97  -0.0693
1/24/97  -0.0834
1/31/97  -0.0678
2/7/97   -0.0623
2/14/97  -0.0551
2/21/97  -0.0645
2/28/97  -0.0605
3/7/97   -0.0581
3/14/97  -0.0654
3/21/97  -0.0715
3/28/97  -0.0715
4/4/97   -0.0573
4/11/97  -0.0973
4/18/97  -0.0806
4/25/97  -0.0748
5/2/97   -0.0672
5/9/97   -0.052
5/16/97  -0.0647
5/23/97  -0.0573
5/30/97  -0.0362
6/6/97   -0.0615
6/13/97  -0.0385
6/20/97  -0.0473
6/27/97  -0.0418
7/4/97   -0.0498
7/11/97  -0.0585
7/18/97  -0.0486
7/25/97  -0.063
8/1/97   -0.0273
8/8/97   -0.0701
8/15/97  -0.0715
8/22/97  -0.0767
8/29/97  -0.0472
9/5/97   -0.058
9/12/97  -0.0656
9/19/97  -0.0557
9/26/97  -0.0492
10/3/97  -0.0292
10/10/97 -0.0492
10/17/97 -0.0506
10/24/97 -0.0574
10/31/97 -0.0477
11/7/97  -0.0442
11/14/97 -0.0377
11/21/97 -0.0688
11/28/97 -0.0484
12/5/97  -0.0406
12/12/97 -0.0652
12/19/97 -0.0648
12/26/97 -0.0456
1/2/98   -0.0171
1/9/98   -0.0197
1/16/98  -0.0185
1/23/98  -0.062
1/30/98  -0.0477
2/6/98   -0.053
2/13/98  -0.0604
2/20/98  -0.0456
2/27/98  -0.0477
3/6/98   -0.0473
3/13/98  -0.0568
3/20/98  -0.0487
3/27/98  -0.0579
4/3/98   -0.0682
4/10/98  -0.0508
4/17/98  -0.062
4/24/98  -0.0768
5/1/98   -0.0618
5/8/98   -0.054
5/15/98  -0.0717
5/22/98  -0.0664
5/29/98  -0.0648
6/5/98   -0.0643
6/12/98  -0.0627
6/19/98  -0.0573
6/26/98  -0.06
7/3/98   -0.0575
7/10/98  -0.0562
7/17/98  -0.0563
7/24/98  -0.0465
7/31/98  -0.0526
8/7/98   -0.0472
8/14/98  -0.0864
8/21/98  -0.0954
8/28/98  -0.054
9/4/98   -0.0618
9/11/98  -0.0487
9/18/98  -0.0392
9/25/98  -0.0402
10/2/98  -0.0554
10/9/98  -0.0744
10/16/98 -0.0485
10/23/98 -0.0406
10/30/98 -0.0616
11/6/98  -0.0396
11/13/98 -0.0481
11/20/98 -0.0641
11/27/98 -0.0478
12/4/98  -0.0413
12/11/98 -0.0363
12/18/98 -0.0537
12/25/98 -0.0132
1/1/99   -0.0196
1/8/99   -0.0297
1/15/99  -0.0392
1/22/99  -0.0627
1/29/99  -0.0677
2/5/99   -0.061
2/12/99  -0.0887
2/19/99  -0.0937
2/26/99  -0.1078
3/5/99   -0.0846
3/12/99  -0.065
3/19/99  -0.1022
3/26/99  -0.0888
4/2/99   -0.0724
4/9/99   -0.1029
4/16/99  -0.0781
4/23/99  -0.093
4/30/99  -0.1156
5/7/99   -0.1015
5/14/99  -0.1277
5/21/99  -0.1256
5/28/99  -0.1093
6/4/99   -0.1007
6/11/99  -0.0558
6/18/99  -0.0835
6/25/99  -0.0602
7/2/99   -0.0532
7/9/99   -0.0532
7/16/99  -0.0761
7/23/99  -0.0558
7/30/99  -0.0829
8/6/99   -0.0464
8/13/99  -0.078
8/20/99  -0.0864
8/27/99  -0.0345
9/3/99   -0.1057
9/10/99  -0.0938
9/17/99  -0.0683
9/24/99  -0.0401
10/1/99  -0.077
10/8/99  -0.086
10/15/99 -0.1231
10/22/99 -0.1254
10/29/99 -0.1223
11/5/99  -0.1192
11/12/99 -0.1252
11/19/99 -0.0826
11/26/99 -0.0979
12/3/99  -0.097
12/10/99 -0.0807
12/17/99 -0.1118
12/24/99 -0.1212
12/31/99 -0.0354
1/7/00   -0.0028
1/14/00  -0.0385
1/21/00  -0.0996
1/28/00  -0.1047
2/4/00   -0.0923
2/11/00  -0.0845
2/18/00  -0.1038
2/25/00  -0.0962
3/3/00   -0.1021
3/10/00  -0.0858
3/17/00  -0.1055
3/24/00  -0.1272
3/31/00  -0.1361
4/7/00   -0.1047
4/14/00  -0.0894
4/21/00  -0.0781
4/28/00  -0.064
5/5/00   -0.0385
5/12/00  -0.0566
5/19/00  -0.0734
5/26/00  -0.0759
6/2/00   -0.0905
6/9/00   -0.1037
6/16/00  -0.0943
6/23/00  -0.0775
6/30/00  -0.0841
7/7/00   -0.0909
7/14/00  -0.0893
7/21/00  -0.097
7/28/00  -0.0927
8/4/00   -0.0912
8/11/00  -0.0879
8/18/00  -0.1046
8/25/00  -0.1046
9/1/00   -0.1105
9/8/00   -0.1113
9/15/00  -0.0836
9/22/00  -0.1189
9/29/00  -0.1155
10/6/00  -0.0896
10/13/00 -0.0921
10/20/00 -0.0895
10/27/00 -0.0725
11/3/00  -0.0739
11/10/00 -0.0747
11/17/00 -0.0962
11/24/00 -0.0937
12/1/00  -0.0928
12/8/00  -0.0903
12/15/00 -0.0913
12/22/00 -0.0672
12/29/00 -0.0276
1/5/01   -0.0411
1/12/01  -0.02
1/19/01  -0.0077
1/26/01  0.0192
2/2/01   -0.0528
2/9/01   -0.0346
2/16/01  -0.0184
2/23/01  -0.0257
3/2/01   -0.0109
3/9/01   -0.036
3/16/01  -0.0393
3/23/01  -0.036
3/30/01  -0.0109
4/6/01   0.02
4/13/01  0.0046
4/20/01  0.0243
4/27/01  -0.0278
5/4/01   -0.0218
5/11/01  0.0037
5/18/01  -0.0228
5/25/01  -0.0111
6/1/01   -0.0345
6/8/01   -0.0325
6/15/01  -0.0654
6/22/01  -0.0623
6/29/01  -0.0379
7/6/01   -0.0307
7/13/01  -0.0098
7/20/01  -0.0264
7/27/01  0.0237
8/3/01   0.0035
8/10/01  -0.0567
8/17/01  -0.0439
8/24/01  -0.0365
8/31/01  -0.0603
9/7/01   -0.0353
9/14/01  -0.0353
9/21/01  0
9/28/01  -0.0414
10/5/01  -0.0433
10/12/01 -0.0114
10/19/01 -0.0191
10/26/01 -0.0138
11/2/01  0.0017
11/9/01  -0.0068
11/16/01 0.026
11/23/01 0.0304
11/30/01 -0.0284
12/7/01  -0.0009
12/14/01 -0.0201
12/21/01 0.021
12/28/01 0.0289
1/4/02   0.0297
1/11/02  0.0276
1/18/02  0.0268
1/25/02  0.0677
2/1/02   0.0444
2/8/02   0.0607
2/15/02  0.0457
2/22/02  0.0582
3/1/02   0.0595
3/8/02   0.0124
3/15/02  0.0302
3/22/02  0.0383
3/29/02  0.04
4/5/02   0.0248
4/12/02  0.0409
4/19/02  0.0394
4/26/02  0.0526
5/3/02   0.0839
5/10/02  0.0595
5/17/02  0.0858
5/24/02  0.0757
5/31/02  0.0766
6/7/02   0.0832
6/14/02  0.067
6/21/02  0.0743
6/28/02  0.0933
7/5/02   0.1238
7/12/02  0.0692
7/19/02  0.0972
7/26/02  0.1421
8/2/02   0.1372
8/9/02   0.1002
8/16/02  0.1195
8/23/02  0.1206
8/30/02  0.1077
9/6/02   0.1002
9/13/02  0.0965
9/20/02  0.0993
9/27/02  0.1042
10/4/02  0.1141
10/11/02 0.1429
10/18/02 0.0519
10/25/02 0.0741
11/1/02  0.0733
11/8/02  0.0721
11/15/02 0.0664
11/22/02 0.061
11/29/02 0.0872
12/6/02  0.0972
12/13/02 0.1086
12/20/02 0.1278
12/27/02 0.1558
1/3/03   0.1518
1/10/03  0.093
1/17/03  0.1092
1/24/03  0.0865
1/31/03  0.1038
2/7/03   0.0983
2/14/03  0.096
2/21/03  0.1148
2/28/03  0.0969
3/7/03   0.1258
3/14/03  0.1585
3/21/03  0.0897
3/28/03  0.1033
4/4/03   0.1225
4/11/03  0.1477
4/18/03  0.1463
4/25/03  0.1211
5/2/03   0.0989
5/9/03   0.0553
5/16/03  0.033
5/23/03  0.0145
5/30/03  0.0486
6/6/03   -0.0024
6/13/03  -0.0086
6/20/03  0.0032
6/27/03  0.0144
7/4/03   0.0296
7/11/03  -0.0249
7/18/03  -0.0105
7/25/03  -0.0049
8/1/03   -0.0353
8/8/03   -0.0217
8/15/03  -0.0297
8/22/03  0.0008
8/29/03  -0.0032
9/5/03   0.0008
9/12/03  -0.0112
9/19/03  -0.023
9/26/03  -0.0346
10/3/03  -0.0214
10/10/03 -0.0207
10/17/03 -0.0254
10/24/03 0.0095
10/31/03 0.0284
11/7/03  0.0422
11/14/03 0.0386
11/21/03 0.074
11/28/03 0.0731
12/5/03  0.0875
12/12/03 0.0816
12/19/03 0.1044
12/26/03 0.1084
1/2/04   0.129
1/9/04   0.1265
1/16/04  0.1176
1/23/04  0.1305
1/30/04  0.1482
2/6/04   0.1425
2/13/04  0.1404
2/20/04  0.1598
2/27/04  0.1199
3/5/04   0.125
3/12/04  0.1358
3/19/04  0.1518
3/26/04  0.1631
4/2/04   0.1128
4/9/04   0.0576
4/16/04  0.0812
4/23/04  0.0174
4/30/04  0.0229
5/7/04   0.0056
5/14/04  0.0535
5/21/04  0.0802
5/28/04  0.0808
6/4/04   0.0662
6/11/04  0.0541
6/18/04  0.0466
6/25/04  0.0503
7/2/04   0.0502
7/9/04   0.0535
7/16/04  0.0572
7/23/04  0.0604
7/30/04  0.0471
8/6/04   0.0884
8/13/04  0.0798
8/20/04  0.0958
8/27/04  0.1202
9/3/04   0.1234
9/10/04  0.1265
9/17/04  0.1212
9/24/04  0.0843
10/1/04  0.0966
10/8/04  0.0858
10/15/04 0.0957
10/22/04 0.0944
10/29/04 0.0865
11/5/04  0.1136
11/12/04 0.1112
11/19/04 0.113
11/26/04 0.1065
12/3/04  0.057
12/10/04 0.0445
12/17/04 0.0643
12/24/04 0.0955
12/31/04 0.0731
1/7/05   0.0837
1/14/05  0.0708
1/21/05  0.0705
1/28/05  0.0682
2/4/05   0.0635
2/11/05  0.0689
2/18/05  0.0876
2/25/05  0.0751
3/4/05   0.0467
3/11/05  0
3/18/05  -0.0252
3/25/05  -0.0463
4/1/05   -0.0268
4/8/05   -0.0182
4/15/05  -0.0361
4/22/05  -0.0471
4/29/05  -0.0196
5/6/05   0.0016
5/13/05  -0.0047
5/20/05  0.0213
5/27/05  0.0205
6/3/05   0.0242
6/10/05  0.0259
6/17/05  -0.0316
6/24/05  0.0024
7/1/05   0.0207
7/8/05   0.0345
7/15/05  0.0619
7/22/05  0.0492
7/29/05  0.0668
8/5/05   0.0743
8/12/05  0.0343
8/19/05  0.0621
8/26/05  0.0686
9/2/05   0.0745
9/9/05   0.0994
9/16/05  0.0914
9/23/05  0.0543
9/30/05  0.0546
10/7/05  0.0204
10/14/05 -0.0057
10/21/05 -0.0164
10/28/05 -0.0372
11/4/05  -0.0431
11/11/05 -0.0361
11/18/05 -0.0221
11/25/05 -0.0305
12/2/05  -0.0231
12/9/05  -0.0561
12/16/05 -0.0796
12/23/05 -0.0735
12/30/05 -0.094

     For additional information about the premiums and discounts, please see the
"Frequently    Asked    Questions"    section   of   the   Fund's   website   at
WWW.PREFERREDINCOME.COM.

ARE THERE ANY FEDERAL TAX  ADVANTAGES TO THE  DISTRIBUTIONS  MADE BY THE FUND IN
2005?

     Yes. In 2005,  the Fund passed on a portion of its income to individuals in
the form of qualified  dividend  income or QDI. QDI is taxed at a 15% or 5% rate
(depending  on an  individual's  income)  instead of the  individual's  ordinary
income tax rate. In calendar year 2005, 86.57% of the distributions  made by the
Fund were eligible for QDI treatment.  For an individual in the 28% tax bracket,
this means that the Fund's total  distributions  will only be taxed at a blended
16.7% rate  versus the 28% rate which  would  apply to  distributions  by a fund
investing in traditional  corporate bonds. This tax advantage means that, for an
individual in the 28%

                                       3



tax bracket,  in calendar year 2005, the  before-tax  6.3% yield  on  net  asset
value  of the Fund was  approximately  equivalent  to a 7.3% yield on net  asset
value of a traditional corporate bond fund.

     Corporate  shareholders  also receive a federal tax benefit from the 84.66%
of the  distributions  which were  eligible  for the  inter-corporate  dividends
received deduction or DRD.

     It is important to remember the composition of the portfolio and the income
distributions  can change from one year to the next, and the QDI or DRD portions
of next  year's  distributions  may not be the same (or  even  similar)  to this
year's.

WHAT WERE THE  COMPONENTS OF THE FUND'S TOTAL RETURN ON NET ASSET VALUE OVER THE
PAST YEAR?

     One  technique  to better  understand  the  Fund's  net asset  value  (NAV)
performance  is to  begin  with  the  Fund's  total  return  on  its  investment
portfolio,  and  progressively  adjust for the impact of hedging,  expenses  and
leverage to arrive at total return  based on NAV (which  factors in all of these
items).  During  fiscal  2005,  the Fund's  unhedged  portfolio  returned  8.5%.
Although  the hedge made money during the 4th fiscal  quarter,  it was a drag on
performance  over the full year as the  hedged  portfolio's  return  before  the
impact of expenses and leverage declined to 6.5%. However,  the favorable impact
of  leverage  served to  approximately  offset  expenses  during the year as the
Fund's total return on NAV equaled 6.4%,  only slightly  below the return on the
Fund's hedged investment portfolio.

HOW DID THE INTEREST RATE HEDGE PERFORM OVER THE PAST YEAR?

     As  discussed  above,  with the  exception of the 4th fiscal  quarter,  the
Fund's interest rate hedge was a drag on performance  over the full fiscal year.
From  November 30, 2004 through  August 31, 2005,  long-term US Treasury  yields
declined  by  approximately  0.75%.  As a result,  on a monthly  basis the hedge
rarely broke even over this period.  While these results are not favorable  when
reviewed in hindsight,  hedging the portfolio against  significant  increases in
long-term  interest rates has been, and will continue to be, a fundamental  part
of the Fund's investment strategy.  The hedging strategy is designed so that the
Fund's  shareholders  effectively pay an "insurance premium" to help protect the
Fund's NAV against a significant increase in long-term interest rates. Moreover,
if interest  rates rise  significantly  over a short period of time,  the Fund's
hedging  strategy may result in realized gains,  the reinvestment of which might
also permit the Fund to increase its dividend rate.

     Beginning in early September,  long-term  interest rates finally started to
track the  increases in the short end of the yield curve,  and the hedge results
for the 4th fiscal quarter were accordingly  positive.  Even in this environment
of  increasing  interest  rates,  the hedge wasn't  perfect.  It has always been
designed as a "safety net" (to help  control the cost of  hedging),  which means
that the Fund must absorb some loss before the hedge  protection  fully engages.
However,  from that point forward,  the hedge is designed to provide significant
protection if interest rates continue to rise.

HOW HAS THE CURRENT INTEREST RATE ENVIRONMENT AFFECTED THE FUND?

     The recent  interest rate  environment has been unusual and challenging for
managing a hedged,  leveraged  preferred  fund. Its most unusual feature is that
long-term  Treasury  yields  have  actually  fallen  slightly  since the Federal
Reserve began raising the short-term  federal funds rate (by a cumulative 3.25%)
in June  2004.  This "bull  flattening"  of the yield  curve has  simultaneously
reduced the incremental return that the Fund earns on its leverage and generated
losses on its hedges.  Historically when the Fed has tightened  monetary policy,
long-term interest rates have risen along with short-term rates, producing gains
on the hedge which could be used - at least in part - to purchase securities and
thereby increase income on the portfolio.  At the same time,  corporate  issuers
generally  have  reduced  debt and  preferreds  relative to equity over the past

                                       4



several  years,  causing the  incremental  yield on those  securities to decline
relative to Treasuries.  This put  additional  pressure on the Fund's ability to
generate income.

     Looking ahead, we see the environment improving.  Corporate demand for debt
and preferred  financing is picking up, new security  structures  are broadening
the appeal of preferred  financing,  and the incremental yields offered by these
securities have increased as a result.  Recently,  long-term interest rates have
increased  along with  short-term  rates,  and the Fund's hedges have  generated
gains.  Finally,  although a flatter  yield curve has  reduced  the  incremental
income  generated  by the  Fund's  leverage,  it also  has  reduced  the cost of
hedging.

HOW WOULD AN "INVERTED YIELD CURVE" IMPACT THE FUND?

     An inverted yield curve,  where short-term rates are above long-term rates,
would  affect the Fund in three  ways.  First,  an  inverted  yield  curve would
increase the cost of the Fund's  leverage  relative to the return the Fund earns
on long-maturity  assets.  In fact, if the yield curve were to invert by a large
amount, it's possible that the leverage costs could exceed the current return on
the preferred securities in the Fund's portfolio.  (Although the yield curve may
invert,  we don't think that a large inversion is likely.) These higher leverage
costs would reduce the incremental return earned on the roughly one-third of the
portfolio that is financed by the Fund's leverage.

     Second, an inverted yield curve would reduce the cost of hedging on 100% of
the  portfolio.  That is because  the  long-term  cost of  hedging  is  directly
affected by the slope of the yield curve.  When the yield curve is steep - as it
has been  for  most of the past  four  years -  hedging  tends to be  expensive,
because the market charges  hedgers the difference  between long- and short-term
yields. If the yield curve inverts, however, hedgers earn the difference between
short- and long-term yields.

     Third,  how the yield curve  inverts is also  important to the Fund. On one
hand, if the yield curve inverts with short rates rising and long rates falling,
leverage  costs rise while the hedge  loses money  (although  less than it would
have if the curve were steep,  because the initial  hedge cost is lower when the
curve is  inverted).  This is  essentially a  continuation  of the scenario that
played out from June 2004  through  August  2005,  and it's a  scenario  that we
believe has run its course.  On the other hand,  if the yield curve inverts with
both short- and long-term  rates  rising,  the hedge gains can be used to offset
some portion of the higher leverage costs; how much depends upon how far and how
quickly long-term rates increase.

     As we have  explained in the past,  the first two effects tend to generally
offset  each other over time in total  return,  with the higher cost of leverage
reducing  income  and the lower  cost of hedging  improving  NAV.  But how those
effects play out in any given quarter or year depends upon the third factor: How
rates actually move.

WHAT ARE ECAPS (SM)?

     Enhanced Capital Advantage Preferred  Securities,  or ECAPS (SM), represent
the latest evolution of hybrid preferred securities. Like other hybrid preferred
securities,  ECAPS  (SM) pay  interest  (as  opposed  to the  dividends  paid on
perpetual preferred stock) which is taxed as ordinary income for most investors.
By combining certain elements of debt and equity financing, issuers of ECAPS are
able to capture some key advantages of each in a single security. The result has
been a dream of Wall Street for years - a true "hybrid" security.

     Of course,  this is not the first time Wall Street  engineers  thought they
discovered  the magic  combination.  In the latter part of 1993,  Monthly Income
Preferred Securities, or "MIPS (SM)", were created with similar promise

                                       5



and  fanfare. As  the  MIPS (SM)  structure  grew  in popularity (not to mention
acronyms), the credit rating agencies increasingly began to treat such issues as
debt when  assessing  an  issuer's  credit strength.  ECAPS (SM) are designed to
specifically address the concerns of  the rating agencies. Time will tell if the
structure can deliver on all its promises;  for  now, however, we  expect to see
substantial new issuance  of  this type  of  security. As of this writing, there
have been ten such issues totaling $4.7 billion from seven different issuers.

HOW MIGHT ECAPS (SM) IMPACT THE FUND?

     In the  future,  ECAPS (SM) could  affect  the Fund in several  ways.  This
segment  appears  poised to grow quickly,  and could  potentially  surpass other
preferred structures in size.

     Companies  that have preferred  securities  currently  outstanding  (either
traditional  preferred stock or older types of hybrid  preferred) will certainly
CONSIDER  redeeming and replacing them with ECAPS (SM),  since the new structure
may provide issuers some important advantages.  If this trend does develop, some
of the positions in the Fund may have to be replaced.

     We also  anticipate  issuance from companies that haven't issued  preferred
securities in the past. A larger  universe of issuers is good for the Fund.  Not
only would it allow greater  diversification,  but the  likelihood of us finding
price anomalies or misunderstood credit risks should increase.


                                       6



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
PORTFOLIO OVERVIEW
NOVEMBER 30, 2005 (UNAUDITED)
----------------------------


FUND STATISTICS ON 11/30/05
-----------------------------------------------
Net Asset Value                $     12.14
Market Price                   $     11.53
Discount                              5.02%
Yield on Market Price                 7.34%

Common Shares 
  Outstanding                   11,676,585



INDUSTRY CATEGORIES          % OF PORTFOLIO
-------------------------------------------
Utilities                         38%
Banks                             23%
Insurance                         14%
Financial
Services                          11%
Oil and Gas                        7%
Other                              5%
REITs                              2%


MOODY'S RATINGS             % OF PORTFOLIO
--------------------------------------------
AAA                                   1.4%
AA                                    3.4%
A                                    19.0%
BBB                                  46.3%
BB                                   17.3%
Not Rated                            10.5%
--------------------------------------------
Below Investment Grade*              18.5%
*  BELOW INVESTMENT GRADE BY BOTH MOODY'S AND
   S&P.


                                               % OF
TOP 10 HOLDINGS BY ISSUER                    PORTFOLIO
---------------------------------------------------------
Interstate Power                              5.3%
Lehman Brothers                               4.3%
Alabama Power                                 4.0%
Xcel Energy                                   3.7%
Principal Financial Group                     3.5%
EOG Resources                                 3.1%
Cobank                                        3.0%
North Fork Bancorporation                     3.0%
UnumProvident                                 2.5%
HSBC                                          2.5%






                                                                                                     % OF PORTFOLIO**
------------------------------------------------------------------------------------------------------------------------
                                                                                                        
Holdings Generating Qualified Dividend Income (QDI) for Individuals                                        76%
Holdings Generating Income Eligible for the Corporate Dividends Received Deduction (DRD)                   73%
------------------------------------------------------------------------------------------------------------------------

**  THIS DOES NOT REFLECT YEAR-END RESULTS OR ACTUAL TAX CATEGORIZATION OF FUND DISTRIBUTIONS. THESE PERCENTAGES CAN, AND
    DO, CHANGE, PERHAPS SIGNIFICANTLY, DEPENDING ON MARKET CONDITIONS. INVESTORS SHOULD CONSULT THEIR TAX ADVISOR REGARDING
    THEIR PERSONAL SITUATION. SEE ACCOMPANYING NOTES TO THE FINANCIAL STATEMENTS FOR THE TAX CHARACTERIZATION OF 2005 DISTRIBUTIONS.



                                       7



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
PORTFOLIO OF INVESTMENTS
NOVEMBER 30, 2005
------------------------------------------------------------------




SHARES/$ PAR                                                                                         VALUE
------------                                                                                       ---------

PREFERRED SECURITIES -- 95.0%
               BANKING -- 22.3%
---------------------------------------------------------------------------------------------------------------------
                                                                                          
               ABN AMRO North America, Inc.:
       1,165     6.46% Pfd., 144A****...........................................................   $      1,184,933*
       1,700     6.59% Pfd., 144A****...........................................................          1,724,531*
$    150,000   BT Capital Trust B, 7.90% 01/15/27 Capital Security..............................            159,055(1)
$    660,000   BT Preferred Capital Trust II, 7.875% 02/25/27 Capital Security..................            703,312(1)
$    250,000   Chase Capital I, 7.67% 12/01/26 Capital Security.................................            265,076
               Citigroup, Inc.:
       7,700     6.213% Pfd., Series G..........................................................            386,886*
      46,000     6.231% Pfd., Series H..........................................................          2,310,810*
      25,650     6.365% Pfd., Series F..........................................................          1,293,658*
               Cobank, ACB:
      45,000     7.00% Pfd., 144A****...........................................................          2,354,175*
      75,000     Adj. Rate Pfd., 144A****.......................................................          4,066,125*
$    500,000   Comerica (Imperial) Capital Trust I, 9.98% 12/31/26 Capital Security, Series B...            558,010
       4,000   FBOP Corporation, Adj. Rate Pfd., 144A****.......................................          3,980,000*
$  2,250,000   First Hawaiian Capital I, 8.343% 07/01/27 Capital Security, Series B.............          2,437,740(1)
               First Republic Bank:
     200,000     6.25% Pfd......................................................................          4,678,000*
       5,000     6.70% Pfd......................................................................            125,275*
$  1,885,000   First Union Institutional Capital II, 7.85% 01/01/27 Capital Security............          2,005,555
$  4,349,000   GreenPoint Capital Trust I, 9.10% 06/01/27 Capital Security......................          4,768,352
$  2,500,000   HBOS Capital Funding LP, 6.85% Pfd...............................................          2,502,575(1)
       5,000   HSBC II, Variable Inverse Pfd., Pvt..............................................          5,306,250*
       2,145   J.P. Morgan Chase & Co., 6.625% Pfd., Series H...................................            109,170*
$  1,350,000   Keycorp Institutional Capital B, 8.25% 12/15/26 Capital Security.................          1,438,054
$  1,500,000   North Fork Capital Trust I, 8.70% 12/15/26 Capital Security......................          1,608,780
      16,000   PFGI Capital Corporation, 7.75% Pfd..............................................            430,800
$  1,700,000   RBS Capital Trust B, 6.80% Pfd...................................................          1,704,063**(1)
          10   Roslyn Real Estate, 8.95% Pfd., Pvt., Series C, 144A****.........................          1,099,758
-------------------------------------------------------------------------------------------------------------------
                                                                                                         47,200,943
                                                                                                   ----------------
               FINANCIAL SERVICES -- 11.4%
---------------------------------------------------------------------------------------------------------------------
       5,000   Bear Stearns Company, 5.72% Pfd., Series F.......................................            237,575*
     175,000   CIT Group, Inc., 6.35% Pfd., Series A............................................          4,364,500*


    The accompanying notes are an integral part of the financial statements.
                                       8



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                            PORTFOLIO OF INVESTMENTS (CONTINUED)
                                                               NOVEMBER 30, 2005
              ------------------------------------------------------------------




SHARES/$ PAR                                                                                         VALUE
------------                                                                                       ---------

PREFERRED SECURITIES -- (CONTINUED)
               FINANCIAL SERVICES -- (CONTINUED)
---------------------------------------------------------------------------------------------------------------------
                                                                                          
               Freddie Mac:
      33,125     5.00% Pfd., Series F...........................................................   $      1,390,256*
      42,650     5.30% Pfd......................................................................          1,897,285*
      83,500   Goldman Sachs Group, Inc., 6.20% Pfd., Series B..................................          2,080,820*
               Lehman Brothers Holdings, Inc.:
       5,150     5.67% Pfd., Series D...........................................................            242,308*
     159,505     5.94% Pfd., Series C...........................................................          7,783,844*
      44,000     6.50% Pfd., Series F...........................................................          1,119,800*
      94,150   SLM Corporation, 6.97% Pfd., Series A............................................          5,021,961*
-------------------------------------------------------------------------------------------------------------------
                                                                                                         24,138,349
                                                                                                   ----------------
               INSURANCE -- 13.7%
---------------------------------------------------------------------------------------------------------------------
      20,000   ACE Ltd., 7.80% Pfd., Series C...................................................            527,500**(1)
      25,000   Aegon NV, 6.375% Pfd.............................................................            612,750**(1)
      16,000   Berkley W.R. Capital Trust II, 6.75% 07/26/45....................................            380,160
      15,850   Everest Re Capital Trust II, 6.20% Pfd., Series B................................            349,651(1)
     140,000   MetLife Inc., 6.50% Pfd., Series B...............................................          3,510,500*
$  4,395,000   MMI Capital Trust I, 7.625% 12/15/27 Capital Security, Series B..................          4,869,770
     275,000   Principal Financial Group, 6.518% Pfd............................................          7,418,780*
$  5,734,000   Provident Financing Trust I, 7.405% 03/15/38 Capital Security....................          5,386,003
     123,000   Scottish Re Group Ltd., 7.25% Pfd................................................          3,068,850**(1)
       2,800   Zurich RegCaPS Funding Trust, 6.58% Pfd., 144A****...............................          2,921,856*
-------------------------------------------------------------------------------------------------------------------
                                                                                                         29,045,820
                                                                                                   ----------------
               UTILITIES -- 37.9%
---------------------------------------------------------------------------------------------------------------------
               Alabama Power Company:
       4,980     4.60% Pfd......................................................................            424,645*
       6,485     4.72% Pfd......................................................................            567,373*
         868     4.92% Pfd......................................................................             79,162*
      85,207     5.20% Pfd......................................................................          1,986,601*
     225,000     5.30% Pfd......................................................................          5,333,625*
       6,000   Baltimore Gas & Electric Company, 6.70% Pfd., Series 1993........................            624,090*
       1,628   Central Hudson Gas & Electric Corporation, 4.35% Pfd., Series D, Pvt.............            139,617*
       3,798   Central Maine Power Company, 4.75% Pfd...........................................            336,560*
      16,679   Central Vermont Public Service Corporation, 8.30% Sinking Fund Pfd., Pvt.........          1,733,699*


    The accompanying notes are an integral part of the financial statements.
                                       9



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
PORTFOLIO OF INVESTMENTS (CONTINUED)
NOVEMBER 30, 2005
------------------------------------------------------------------




SHARES/$ PAR                                                                                         VALUE
------------                                                                                       ---------
PREFERRED SECURITIES -- (CONTINUED)
               UTILITIES -- (CONTINUED)
---------------------------------------------------------------------------------------------------------------------
                                                                                          
               Connecticut Light & Power Company:
       2,050     4.50% Pfd., Series 1956........................................................   $         80,134*
      25,000     5.28% Pfd., Series 1967........................................................          1,132,500*
         883     $2.04 Pfd., Series 1949........................................................             31,294*
       2,900     $2.20 Pfd., Series 1949........................................................            110,852*
       9,652     $3.24 Pfd......................................................................            505,330*
       2,000   Consolidated Edison Company of New York, 4.65% Pfd., Series C....................            174,980*
       7,500   Dayton Power and Light Company, 3.90% Pfd., Series C.............................            501,037*
$  1,000,000   Dominion Resources Capital Trust III, 8.40% 01/15/31.............................          1,202,005
       5,000   Duke Energy Corporation, 4.50% Pfd., Series C, Pvt...............................            504,250*
               Duquesne Light Company:
      15,030     3.75% Pfd......................................................................            487,648*
      25,775     6.50% Pfd......................................................................          1,331,794*
       5,000   Energy East Capital Trust I, 8.25% Pfd...........................................            127,750
               Entergy Arkansas, Inc.:
       2,840     4.56% Pfd......................................................................            238,106*
       3,050     4.56% Pfd., Series 1965........................................................            255,712*
       1,150     6.08% Pfd......................................................................            106,622*
      14,225     7.40% Pfd......................................................................          1,479,187*
       6,388     7.80% Pfd......................................................................            667,770*
       2,265     7.88% Pfd......................................................................            236,251*
      25,536     $1.96 Pfd......................................................................            639,038*
       2,441   Entergy Gulf States, Inc., 7.56% Pfd.............................................            237,046*
               Entergy Louisiana, Inc.:
         299     5.16% Pfd......................................................................             28,505*
         943     6.44% Pfd......................................................................             97,662*
       4,174     7.36% Pfd......................................................................            434,117*
     175,000     8.00% Pfd., Series 92..........................................................          4,411,750*
               Entergy Mississippi, Inc.:
       4,616     4.36% Pfd......................................................................            329,882*
       5,000     4.92% Pfd......................................................................            403,250*
               Florida Power Company:
      10,000     4.58% Pfd......................................................................            879,550*
       2,000     4.75% Pfd......................................................................            181,560*
               Great Plains Energy, Inc.:
       1,625     4.20% Pfd......................................................................            123,256*
       2,000     4.35% Pfd......................................................................            157,110*


    The accompanying notes are an integral part of the financial statements.
                                       10



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                            PORTFOLIO OF INVESTMENTS (CONTINUED)
                                                               NOVEMBER 30, 2005
              ------------------------------------------------------------------




SHARES/$ PAR                                                                                         VALUE
------------                                                                                       ---------
PREFERRED SECURITIES -- (CONTINUED)
               UTILITIES -- (CONTINUED)
---------------------------------------------------------------------------------------------------------------------
                                                                                          
      20,000   Gulf Power Company, 6.00% Pfd....................................................   $      2,009,200*
               Hawaiian Electric Company, Inc.:
       2,471     5.00% Pfd., Series D...........................................................             46,084*
       7,438     5.00% Pfd., Series E...........................................................            138,719*
       1,383     5.00% Pfd., Series I...........................................................             25,793*
$  3,750,000   Houston Light & Power Capital Trust II, 8.257% 02/01/37 Capital Security.........          3,968,437
      30,500   Indianapolis Power & Light Company, 5.65% Pfd....................................          2,812,710*
     340,000   Interstate Power & Light Company, 8.375% Pfd., Series B..........................         11,316,900*
         200   Narragansett Electric Company, 4.64% Pfd.........................................              9,237*
       2,588   New York State Electric & Gas, $4.50 Pfd., Series 1949...........................            222,361*
      12,265   Northern Indiana Public Service Company, Adj. Rate Pfd., Series A................            627,048*
               Ohio Power Company:
       3,018     4.20% Pfd......................................................................            246,601*
       1,251     4.40% Pfd......................................................................            107,092*
               Pacific Enterprises:
      13,680     $4.36 Pfd......................................................................          1,134,346*
      24,985     $4.50 Pfd......................................................................          2,138,216*
      15,730     $4.75 Pfd., Series 53..........................................................          1,420,970*
               Pacific Gas & Electric Co.:
      41,500     5.00% Pfd., Series D...........................................................            868,387*
      50,000     5.00% Pfd., Series E...........................................................          1,064,000*
               PacifiCorp:
       5,672     $4.56 Pfd......................................................................            468,394*
       6,708     $4.72 Pfd......................................................................            573,366*
      10,500     $7.48 Sinking Fund Pfd.........................................................          1,089,847*
       1,250   PECO Energy Company, $4.30 Pfd., Series B........................................            101,262*
      15,142   Portland General Electric, 7.75% Sinking Fund Pfd................................          1,569,090*
      14,020   Public Service Electric & Gas Company, 5.28% Pfd., Series E......................          1,337,508*
      70,210   San Diego Gas & Electric Company, $1.70 Pfd......................................          1,822,652*
       8,900   Savannah Electric & Gas Company, 6.00% Pfd.......................................            226,015*
               South Carolina Electric & Gas Company:
      14,226     5.125% Purchase Fund Pfd., Pvt.................................................            731,501*
       7,774     6.00% Purchase Fund Pfd., Pvt..................................................            396,008*
               Southern California Edison:
      57,646     4.08% Pfd......................................................................          1,082,015*
       5,000     4.24% Pfd......................................................................             95,800*
      60,000   Southern Union Company, 7.55% Pfd................................................          1,608,900*


    The accompanying notes are an integral part of the financial statements.
                                       11



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
PORTFOLIO OF INVESTMENTS (CONTINUED)
NOVEMBER 30, 2005
------------------------------------------------------------------




SHARES/$ PAR                                                                                         VALUE
------------                                                                                       ---------
PREFERRED SECURITIES -- (CONTINUED)
               UTILITIES -- (CONTINUED)
---------------------------------------------------------------------------------------------------------------------
                                                                                          
$    750,000   TXU Electric Capital V, 8.175% 01/30/37 Capital Security.........................   $        792,011
       5,700   Union Electric Company, 4.56% Pfd................................................            488,234*
               Virginia Electric & Power Company:
       1,665     $4.04 Pfd......................................................................            128,088*
       2,470     $4.20 Pfd......................................................................            197,551*
       1,673     $4.80 Pfd......................................................................            154,376*
       2,878     $6.98 Pfd......................................................................            295,614*
      12,500     $7.05 Pfd......................................................................          1,279,938*
       2,262   Washington Gas & Light Company, $4.25 Pfd........................................            184,342*
      12,863   Wisconsin Power & Light, 6.20% Pfd...............................................          1,319,294*
               Xcel Energy, Inc.:
      15,000     $4.08 Pfd., Series B...........................................................          1,158,675*
      20,040     $4.10 Pfd., Series C...........................................................          1,555,505*
      35,510     $4.11 Pfd., Series D...........................................................          2,763,033*
      17,750     $4.16 Pfd., Series E...........................................................          1,397,901*
      10,000     $4.56 Pfd., Series G...........................................................            863,300*
-------------------------------------------------------------------------------------------------------------------
                                                                                                         80,157,641
                                                                                                   ----------------
               OIL AND GAS -- 5.6%
---------------------------------------------------------------------------------------------------------------------
      17,200   Anadarko Petroleum Corporation, 5.46% Pfd........................................          1,733,416*
       8,000   Devon Energy Corporation, 6.49% Pfd., Series A...................................            809,720*
       6,125   EOG Resources, Inc., 7.195% Pfd., Series B.......................................          6,498,594*
$  1,650,000   KN Capital Trust III, 7.63% 04/15/28 Capital Security............................          1,805,562
      10,000   Lasmo America Limited, 8.15% Pfd., 144A****......................................          1,099,350*(1)
-------------------------------------------------------------------------------------------------------------------
                                                                                                         11,946,642
                                                                                                   ----------------
               REAL ESTATE INVESTMENT TRUST (REIT) -- 2.2%
---------------------------------------------------------------------------------------------------------------------
       1,000   Equity Residential Properties, 8.29% Pfd., REIT, Series K........................             59,305
               PS Business Parks, Inc.:
      10,000     7.00% Pfd., REIT, Series H.....................................................            242,350
      18,120     7.20% Pfd., REIT, Series M.....................................................            441,041
               Public Storage, Inc.:
      11,100     6.18% Pfd., REIT, Series D.....................................................            248,029
      14,350     6.45% Pfd., REIT, Series F.....................................................            331,916
      22,500     6.75% Pfd., REIT, Series E.....................................................            547,875
      30,000     7.125% Pfd., REIT..............................................................            758,700


    The accompanying notes are an integral part of the financial statements.
                                       12



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                            PORTFOLIO OF INVESTMENTS (CONTINUED)
                                                               NOVEMBER 30, 2005
              ------------------------------------------------------------------




SHARES/$ PAR                                                                                         VALUE
------------                                                                                       ---------
PREFERRED SECURITIES -- (CONTINUED)
               REAL ESTATE INVESTMENT TRUST (REIT) -- (CONTINUED)
---------------------------------------------------------------------------------------------------------------------
                                                                                          
      40,000   Realty Income Corporation, 7.375% Pfd., REIT, Series D...........................   $      1,015,400
      40,000   Regency Centers Corporation, 7.25% Pfd., REIT....................................          1,001,400
-------------------------------------------------------------------------------------------------------------------
                                                                                                          4,646,016
                                                                                                   ----------------
               MISCELLANEOUS INDUSTRIES -- 1.9%
---------------------------------------------------------------------------------------------------------------------
      13,600   E.I. Du Pont de Nemours and Company, $4.50 Pfd., Series B........................          1,173,476*
      30,500   Ocean Spray Cranberries, Inc., 6.25% Pfd., 144A****..............................          2,731,123*
      26,000   Touch America Holdings, $6.875 Pfd...............................................                --*+
-------------------------------------------------------------------------------------------------------------------
                                                                                                          3,904,599
                                                                                                   ----------------
               TOTAL PREFERRED SECURITIES(Cost $188,416,250)....................................        201,040,010
                                                                                                   ----------------
CORPORATE DEBT SECURITIES -- 1.5%
               OIL AND GAS -- 1.1%
---------------------------------------------------------------------------------------------------------------------
      85,900   Nexen, Inc., 7.35% Subordinated Notes............................................          2,214,502(1)
---------------------------------------------------------------------------------------------------------------------
               UTILITIES -- 0.4%
---------------------------------------------------------------------------------------------------------------------
$  1,000,000   Duquesne Light Holdings, 6.25% 08/15/35..........................................            958,020
-------------------------------------------------------------------------------------------------------------------
               TOTAL CORPORATE DEBT SECURITIES(Cost $3,241,551).................................          3,172,522
                                                                                                   ----------------
COMMON STOCK -- 0.8%
               BANKING -- 0.8%
---------------------------------------------------------------------------------------------------------------------
     110,000   New York Community Bancorp, Inc..................................................          1,831,500*
-------------------------------------------------------------------------------------------------------------------
               TOTAL COMMON STOCK(Cost $1,917,807)..............................................          1,831,500
                                                                                                   ----------------
OPTION CONTRACTS -- 0.8%
         206   January Put Options on March U.S. Treasury Bond Futures, Expiring 12/22/05.......            627,656+
       1,169   March Put Options on March U.S. Treasury Bond Futures, Expiring 02/24/06.........          1,009,563+
-------------------------------------------------------------------------------------------------------------------
               TOTAL OPTION CONTRACTS(Cost $2,070,815)..........................................          1,637,219
                                                                                                   ----------------


    The accompanying notes are an integral part of the financial statements.
                                       13



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
PORTFOLIO OF INVESTMENTS (CONTINUED)
NOVEMBER 30, 2005
------------------------------------------------------------------




SHARES/$ PAR                                                                                         VALUE
------------                                                                                       ---------
                                                                                          
MONEY MARKET FUND -- 1.4%
   3,028,802   BlackRock Provident Institutional, TempFund......................................   $      3,028,802
-------------------------------------------------------------------------------------------------------------------
               TOTAL MONEY MARKET FUND(Cost $3,028,802).........................................          3,028,802
                                                                                                   ----------------

 TOTAL INVESTMENTS (Cost $198,675,225***)..........................................        99.5%        210,710,053
 OTHER ASSETS AND LIABILITIES (Net)................................................         0.5%          1,006,470
                                                                                      ---------    ----------------

 TOTAL NET ASSETS AVAILABLE TO COMMON AND PREFERRED STOCK..........................       100.0%++ $    211,716,523
                                                                                      ---------    ----------------

 MONEY MARKET CUMULATIVE PREFERRED STOCK(TM) (MMP(R)) REDEMPTION VALUE..........................        (70,000,000)
                                                                                                   ----------------
 TOTAL NET ASSETS AVAILABLE TO COMMON STOCK.....................................................   $    141,716,523
                                                                                                   ================

-----------------------------
*      Securities eligible for the Dividends Received Deduction and distributing
       Qualified Dividend Income.
**     Securities distributing Qualified Dividend Income only.
***    Aggregate cost of securities held.
****   Securities exempt from registration under Rule 144A of the Securities Act
       of 1933. These  securities  may  be  resold in  transactions  exempt from
       registration to  qualified  institutional  buyers. These securities  have
       been determined to be liquid under guidelines established by the Board of
       Directors.
(1)    Foreign Issuer.
+      Non-income producing.
++     The percentage shown for each investment category is the total  value  of
       that  category as a percentage of net  assets  available  to  Common  and
       Preferred Stock.



         ABBREVIATIONS:
REIT   -- Real Estate Investment Trust
PFD.   -- Preferred Securities
PVT.   -- Private Placement Securities


    The accompanying notes are an integral part of the financial statements.
                                       14



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                             STATEMENT OF ASSETS AND LIABILITIES
                                                               NOVEMBER 30, 2005
                                             -----------------------------------




                                                                                                 
ASSETS:
   Investments, at value (Cost $198,675,225) ...................................                       $  210,710,053
   Receivable for Investments sold..............................................                            1,247,648
   Dividends and interest receivable............................................                            1,690,881
   Prepaid expenses.............................................................                               83,848
                                                                                                       --------------
           Total Assets.........................................................                          213,732,430

LIABILITIES:
   Payable for Investments purchased............................................    $  1,443,158
   Dividends payable to Common Stock Shareholders...............................         112,394
   Investment advisory fee payable..............................................          97,436
   Administration, Transfer Agent and Custodian fees payable....................          39,449
   Professional fees payable....................................................          58,939
   Directors' fees payable......................................................             609
   Accrued expenses and other payables..........................................          28,774
   Accumulated undeclared distributions to Money Market Cumulative
        Preferred(TM) Stock Shareholders .......................................         235,148
                                                                                    ------------
           Total Liabilities....................................................                            2,015,907
                                                                                                       --------------
MONEY MARKET CUMULATIVE PREFERRED(TM) STOCK (700 SHARES
        OUTSTANDING) REDEMPTION VALUE ..........................................                           70,000,000
                                                                                                       --------------
NET ASSETS AVAILABLE TO COMMON STOCK............................................                       $  141,716,523
                                                                                                       ==============

NET ASSETS AVAILABLE TO COMMON STOCK consist of:
   Distributions in excess of net investment income.............................                       $     (209,391)
   Accumulated net realized loss on investments sold............................                           (5,257,425)
   Unrealized appreciation of investments.......................................                           12,034,828
   Par value of Common Stock....................................................                              116,766
   Paid-in capital in excess of par value of Common Stock.......................                          135,031,745
                                                                                                       --------------
           Total Net Assets Available to Common Stock...........................                       $  141,716,523
                                                                                                       ==============

NET ASSET VALUE PER SHARE OF COMMON STOCK:
     Common Stock (11,676,585 shares outstanding)...............................                       $        12.14
                                                                                                       ==============




    The accompanying notes are an integral part of the financial statements.
                                       15



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
STATEMENT OF OPERATIONS
FOR THE YEAR ENDED NOVEMBER 30, 2005
------------------------------------



                                                                                                 
INVESTMENT INCOME:
     Dividends++ ...............................................................                       $   10,550,979
     Interest...................................................................                            2,822,238
                                                                                                       --------------
          Total Investment Income...............................................                           13,373,217

EXPENSES:
     Investment advisory fee....................................................    $  1,206,133
     Administrator's fee........................................................         212,602
     Money Market Cumulative Preferred(TM) Stock broker commissions
        and auction agent fees .................................................         189,930
     Professional fees..........................................................         121,990
     Insurance expense..........................................................         148,700
     Transfer agent fees .......................................................          79,214
     Directors' fees ...........................................................          67,975
     Custodian fees ............................................................          27,316
     Chief Compliance Officer fees .............................................          38,815
     Other .....................................................................         135,491
                                                                                    ------------
          Total Expenses........................................................                            2,228,166
                                                                                                       --------------
NET INVESTMENT INCOME...........................................................                           11,145,051
                                                                                                       --------------

REALIZED AND UNREALIZED GAIN/(LOSS) ON INVESTMENTS
     Net realized gain on investments sold during the year......................                            4,238,243
     Change in unrealized appreciation/depreciation of investments
        during the year ........................................................                           (4,421,911)
                                                                                                       --------------
NET REALIZED AND UNREALIZED LOSS ON INVESTMENTS.................................                             (183,668)
                                                                                                       --------------

DISTRIBUTIONS TO MONEY MARKET CUMULATIVE PREFERRED(TM) STOCK SHAREHOLDERS:
     From net investment income (including changes in accumulated
        undeclared distributions) ..............................................                           (1,937,548)
                                                                                                       --------------
NET INCREASE IN NET ASSETS TO COMMON STOCK RESULTING FROM OPERATIONS..............                     $    9,023,835
                                                                                                       ==============

-----------
 ++   For Federal income tax purposes,  a significant portion of this amount may
      not qualify for the  inter-corporate  dividends received deduction ("DRD")
      or as qualified dividend income ("QDI") for individuals.




    The accompanying notes are an integral part of the financial statements.
                                       16



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE TO COMMON STOCK(1)
                ----------------------------------------------------------------





                                                                                     YEAR ENDED          YEAR ENDED
                                                                                 NOVEMBER 30, 2005    NOVEMBER 30, 2004
                                                                                 -----------------    -----------------
                                                                                                     
OPERATIONS:
     Net investment income......................................................  $    11,145,051      $    11,304,884
     Net realized gain on investments sold during the year......................        4,238,243              149,942
     Change in net unrealized appreciation/depreciation of investments
        held during the year ...................................................       (4,421,911)          (3,431,405)
     Distributions to Money Market Cumulative Preferred(TM) Stock
        Shareholders from net investment income, including changes in
        accumulated undeclared distributions....................................       (1,937,548)          (1,029,065)
                                                                                  ---------------      ---------------
     NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS.......................        9,023,835            6,994,356

DISTRIBUTIONS:
     Dividends paid from net investment income to Common Stock Shareholders(1)..      (10,602,545)         (10,790,181)
                                                                                  ---------------      ---------------
     TOTAL DISTRIBUTIONS TO COMMON STOCK SHAREHOLDERS...........................      (10,602,545)         (10,790,181)

FUND SHARE TRANSACTIONS:
     Increase from shares issued under the Dividend Reinvestment and
        Cash Purchase Plan .....................................................        1,150,181            1,637,955
                                                                                  ---------------      ---------------
     NET INCREASE IN NET ASSETS AVAILABLE TO COMMON STOCK
        RESULTING FROM FUND SHARE TRANSACTIONS .................................        1,150,181            1,637,955

NET DECREASE IN NET ASSETS AVAILABLE TO COMMON                                    ---------------      ---------------
    STOCK FOR THE YEAR..........................................................  $      (428,529)     $    (2,157,870)
                                                                                  ===============      ===============
------------------------------------------------------------------------------------------------------------------------
NET ASSETS AVAILABLE TO COMMON STOCK:
     Beginning of year..........................................................  $   142,145,052      $   144,302,922
     Net decrease during the year...............................................         (428,529)          (2,157,870)
                                                                                  ---------------      ---------------

     End of year (including distributions in excess of net investment
        income of ($209,391) and undistributed net investment income
        of $952,811, respectively)..............................................  $   141,716,523      $   142,145,052
                                                                                  ===============      ===============

-------------
(1) Includes income earned, but not paid out, in prior fiscal year.





    The accompanying notes are an integral part of the financial statements.

                                       17



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
FINANCIAL HIGHLIGHTS
FOR A COMMON SHARE OUTSTANDING THROUGHOUT EACH YEAR.
----------------------------------------------------

     Contained below is per share operating  performance  data, total investment
returns,  ratios to  average  net  assets  and  other  supplemental  data.  This
information  has  been  derived  from  information  provided  in  the  financial
statements and market price data for the Fund's shares.





                                                                                  YEAR ENDED NOVEMBER 30,
                                                                  ------------------------------------------------------------------
                                                                     2005        2004         2003        2002         2001
                                                                  ---------    --------     --------    --------     --------
                                                                                                      
PER SHARE OPERATING PERFORMANCE:
Net asset value, beginning of year.............................   $   12.27    $  12.59     $  10.78    $  11.60     $  10.68
                                                                  ---------    --------     --------    --------     --------
INVESTMENT OPERATIONS:
Net investment income..........................................        0.96        0.98         1.02        1.07         1.10
Net realized and unrealized gain/(loss) on investments.........       (0.01)      (0.27)        1.85       (0.87)        0.89
DISTRIBUTIONS TO MMP(R)* SHAREHOLDERS:
From net investment income.....................................       (0.17)      (0.09)       (0.08)      (0.11)       (0.25)
                                                                  ---------    --------     --------    --------     --------
Total from investment operations...............................        0.78        0.62         2.79        0.09         1.74
                                                                  ---------    --------     --------    --------     --------
DISTRIBUTIONS TO COMMON SHAREHOLDERS:
From net investment income.....................................       (0.91)      (0.94)       (0.98)      (0.91)       (0.82)
                                                                  ---------    --------     --------    --------     --------
Total distributions to Common Shareholders.....................       (0.91)      (0.94)       (0.98)      (0.91)       (0.82)
                                                                  ---------    --------     --------    --------     --------
Net asset value, end of year...................................   $   12.14    $  12.27     $  12.59    $  10.78     $  11.60
                                                                  =========    ========     ========    ========     ========
Market value, end of year......................................   $   11.53    $  13.53     $  13.51    $  11.72     $  11.27
                                                                  =========    ========     ========    ========     ========
Total investment return based on net asset value**.............       6.36%       4.68%       26.57%       0.63%       16.97%
                                                                  =========    ========     ========    ========     ========
Total investment return based on market value**................      (8.40%)      7.57%       24.92%      12.61%       26.95%
                                                                  =========    ========     ========    ========     ========
RATIOS TO AVERAGE NET ASSETS AVAILABLE
   TO COMMON STOCK SHAREHOLDERS:
     Total net assets, end of year (in 000's)..................   $ 141,717    $142,145     $144,303    $122,258     $129,792
     Operating expenses........................................        1.53%       1.52%        1.54%       1.56%        1.61%
     Net investment income + ..................................        6.30%       7.11%        7.85%       8.67%        7.63%
-----------------------------------------------
SUPPLEMENTAL DATA:++
     Portfolio turnover rate...................................          57%         28%          28%         29%          41%
     Total net assets available to Common and Preferred Stock,
        end of year (in 000's) ................................   $ 211,717    $212,145     $214,411    $192,361     $200,228
     Ratio of operating expenses to total average net assets
        available to Common and Preferred Stock ..................     1.03%       1.03%        1.02%       1.00%        1.03%

   * Money Market Cumulative Preferred(TM) Stock.
  ** Assumes  reinvestment of  distributions at the price obtained by the Fund's
     Dividend Reinvestment and Cash Purchase Plan.  
   + The net  investment  income ratios reflect income net of operating expenses  
     and  payments  to MMP(R)* Shareholders.
  ++ Information presented  under  heading  Supplemental  Data includes MMP(R)*.




    The accompanying notes are an integral part of the financial statements.

                                       18



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                                FINANCIAL HIGHLIGHTS (CONTINUED)
                                                       PER SHARE OF COMMON STOCK
                                                --------------------------------





                                                                      TOTAL                                 DIVIDEND
                                                                    DIVIDENDS  NET ASSET      NYSE        REINVESTMENT
                                                                      PAID       VALUE    CLOSING PRICE     PRICE (1)
                                                                    ---------  ---------  -------------   ------------
                                                                                               
December 31, 2004 - EXTRA........................................   $0.0450    $12.58         $13.50       $12.83
December 31, 2004................................................    0.0755     12.58          13.50        12.83
January 31, 2005.................................................    0.0755     12.78          13.59        12.91
February 28, 2005................................................    0.0755     12.74          13.85        13.16
March 31, 2005...................................................    0.0755     12.65          11.91        12.39
April 30, 2005...................................................    0.0705     12.75          12.50        12.67
May 31, 2005.....................................................    0.0705     12.78          12.92        12.78
June 30, 2005....................................................    0.0705     12.69          12.88        12.69
July 31, 2005....................................................    0.0705     12.42          13.25        12.59
August 31, 2005..................................................    0.0705     12.66          13.50        12.83
September 30, 2005...............................................    0.0705     12.28          12.95        12.30
October 31, 2005.................................................    0.0705     12.10          11.41        11.81
November 30, 2005................................................    0.0705     12.14          11.53        11.78

-------------
(1)  Whenever  the net asset value per share of the Fund's  Common Stock is less
     than or equal to the market price per share on the payment date, new shares
     issued  will be valued at the higher of net asset  value or 95% of the then
     current market price.  Otherwise,  the reinvestment  shares of Common Stock
     will be purchased in the open market.




    The accompanying notes are an integral part of the financial statements.

                                       19



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
FINANCIAL HIGHLIGHTS (CONTINUED)
------------------------------------------------------------------
      The  table  below  sets out  information  with  respect  to  Money  Market
Cumulative Preferred(TM) Stock currently outstanding.




                                                                           INVOLUNTARY                AVERAGE
                                                       ASSET               LIQUIDATING                 MARKET
                            TOTAL SHARES              COVERAGE             PREFERENCE                   VALUE
         DATE              OUTSTANDING (1)          PER SHARE (2)         PER SHARE (3)           PER SHARE (1) & (3)
    --------------        ----------------          -------------         -------------           -------------------
                                                                                        
      11/30/05                 700                    $302,788               $100,000                  $100,000
      11/30/04                 700                     303,137                100,000                   100,000
      11/30/03                 700                     306,301                100,000                   100,000
      11/30/02                 700                     274,802                100,000                   100,000
      11/30/01                 700                     286,040                100,000                   100,000
      11/30/00                 700                     270,952                100,000                   100,000
      11/30/99                 700                     284,371                100,000                   100,000

-----------
(1) See note 6.
(2) Calculated   by  subtracting  the Fund's total  liabilities  (excluding  the
    MMP(R)) from the Fund's total assets and dividinG that amount by the  number
    of MMP(R) shares outstanding.
(3) Excludes accumulated undeclared dividends.



    The accompanying notes are an integral part of the financial statements.

                                       20



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                                   NOTES TO FINANCIAL STATEMENTS
              ------------------------------------------------------------------



1.   ORGANIZATION

     Flaherty & Crumrine  Preferred Income  Opportunity Fund  Incorporated  (the
"Fund") was  incorporated  as a Maryland  corporation  on December 10, 1991, and
commenced  operations  on  February  13,  1992  as  a  diversified,   closed-end
management  investment  company  under the  Investment  Company Act of 1940,  as
amended  (the "1940  Act").  The Fund's  investment  objective is to provide its
common shareholders with high current income consistent with the preservation of
capital.

2.   SIGNIFICANT ACCOUNTING POLICIES

     The following is a summary of significant  accounting policies consistently
followed  by the  Fund  in the  preparation  of its  financial  statements.  The
preparation of financial statements is in conformity with accounting  principles
generally  accepted in the United  States of America and requires  management to
make estimates and  assumptions  that affect the reported  amounts of assets and
liabilities in the financial  statements  and the reported  amounts of increases
and decreases in net assets from operations during the reporting period.  Actual
results could differ from those estimates.

     PORTFOLIO  VALUATION:  The net asset  value of the Fund's  Common  Stock is
determined  by the  Fund's  Administrator  no less  frequently  than on the last
business day of each week and month.  It is  determined by dividing the value of
the  Fund's  net  assets  available  to Common  Stock by the number of shares of
Common Stock  outstanding.  The value of the Fund's net assets  attributable  to
Common  Stock is deemed to equal the value of the Fund's  total  assets less (i)
the  Fund's  liabilities  and  (ii)  the  aggregate  liquidation  value  of  the
outstanding Money Market Cumulative Preferred(TM) Stock ("MMP(R)").

     Securities listed on a national securities exchange are valued on the basis
of the last sale on such exchange on the day of  valuation,  except as described
hereafter.  In the absence of sales of listed securities and with respect to (a)
securities  for which the most recent  sale  prices are not deemed to  represent
fair  market  value  and  (b)  unlisted  securities  (other  than  money  market
instruments),  securities  are valued at the mean  between  the  closing bid and
asked  prices  when  quoted  prices  for  investments  are  readily   available.
Investments in over-the-counter  derivative  instruments,  such as interest rate
swaps and options thereon ("swaptions"),  are valued at the prices obtained from
the  broker/dealer or bank that is the counterparty to such instrument,  subject
to comparison of such valuation with a valuation  obtained from a  broker/dealer
or bank that is not a  counterparty  to the  particular  derivative  instrument.
Investments for which market  quotations are not readily  available or for which
management  determines  that the prices  are not  reflective  of current  market
conditions  are valued at fair value as determined in good faith by or under the
direction  of the  Board  of  Directors  of the  Fund,  including  reference  to
valuations of other  securities  which are  comparable in quality,  maturity and
type. Investments in money market instruments,  which mature in 60 days or less,
are valued at amortized  cost.  Investments  in money market funds are valued at
the net asset value of such funds.

     SECURITIES TRANSACTIONS AND INVESTMENT INCOME:  Securities transactions are
recorded as of the trade date.  Realized gains and losses from  securities  sold
are  recorded  on the  identified  cost  basis.  Dividend  income is recorded on
ex-dividend  dates.  Interest income is recorded on the accrual basis.  The Fund
also  amortizes   premiums  and  accretes  discounts  on  certain  fixed  income
securities.

                                       21



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
NOTES TO FINANCIAL STATEMENTS (CONTINUED)
------------------------------------------------------------------

     OPTIONS:  Purchases of options are recorded as an investment,  the value of
which is  marked-to-market  at each valuation  date. When the Fund enters into a
closing sale  transaction,  the Fund will record a gain or loss depending on the
difference  between the  purchase  and sale  price.  The risks  associated  with
purchasing  options and the maximum loss the Fund would incur are limited to the
purchase price originally paid.

     When the Fund writes an option,  an amount equal to the premium received by
the Fund is recorded as a liability,  the value of which is  marked-to-market at
each valuation  date.  When a written option  expires,  the Fund realizes a gain
equal to the amount of the  premium  originally  received.  When the Fund enters
into a closing  purchase  transaction,  the Fund realizes a gain (or loss if the
cost of the closing purchase  transaction  exceeds the premium received when the
option  was  written)  without  regard  to any  unrealized  gain  or loss on the
underlying  security,  and the liability  related to such option is  eliminated.
When a call option is exercised,  the Fund realizes a gain or loss from the sale
of the underlying  security and the proceeds from such sale are increased by the
amount of the premium originally received.  When a put option is exercised,  the
amount of the premium  originally  received will reduce the cost of the security
which the Fund purchased upon exercise.

     The  risk in  writing  a call  option  is that  the  Fund  may  forego  the
opportunity for profit if the market price of the underlying  security increases
and the option is  exercised.  The risk in writing a put option is that the Fund
may incur a loss if the market price of the  underlying  security  decreases and
the option is exercised.

     REPURCHASE  AGREEMENTS:   The  Fund  may  engage  in  repurchase  agreement
transactions. The Fund's investment adviser reviews and approves the eligibility
of the banks and dealers with which the Fund may enter into repurchase agreement
transactions.  The value of the collateral  underlying  such  transactions is at
least  equal at all times to the total  amount  of the  repurchase  obligations,
including interest.  The Fund maintains possession of the collateral through its
custodian and, in the event of counterparty  default,  the Fund has the right to
use the collateral to offset losses  incurred.  There is the possibility of loss
to the Fund in the event the Fund is delayed or prevented  from  exercising  its
rights to dispose of the collateral securities.

     FEDERAL  INCOME  TAXES:  The Fund  intends  to  continue  to  qualify  as a
regulated investment company by complying with the requirements under subchapter
M of the Internal  Revenue  Code of 1986,  as amended,  applicable  to regulated
investment companies and intends to distribute  substantially all of its taxable
net  investment  income to its  shareholders.  Therefore,  no federal income tax
provision is required.

     DIVIDENDS AND  DISTRIBUTIONS TO  SHAREHOLDERS:  The Fund expects to declare
dividends on a monthly basis to shareholders  of Common Stock  ("Shareholders").
Distributions  to  Shareholders  are recorded on the  ex-dividend  date. Any net
realized  short-term  capital gains will be distributed to Shareholders at least
annually.  Any net  realized  long-term  capital  gains  may be  distributed  to
Shareholders  at least  annually or may be retained by the Fund as determined by
the Fund's Board of Directors. Capital gains retained by the Fund are subject to
tax at the capital gains corporate tax rate. Subject to the Fund qualifying as a
regulated  investment  company,  any taxes paid by the Fund on such net realized
long-term  capital  gains  may be used by the  Fund's  Shareholders  as a credit
against their own tax liabilities.

                                       22



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                       NOTES TO FINANCIAL STATEMENTS (CONTINUED)
              ------------------------------------------------------------------

     Income and capital gain  distributions  are determined and characterized in
accordance with income tax regulations which may differ from generally  accepted
accounting  principles.  These  differences  are  primarily due to (1) differing
treatments  of income and gains on  various  investment  securities  held by the
Fund,  including  timing  differences,  (2) the attribution of expenses  against
certain components of taxable  investment  income,  and (3) federal  regulations
requiring  proportionate  allocation  of  income  and  gains to all  classes  of
shareholders.

     Distributions  from net  realized  gains  for  book  purposes  may  include
short-term  capital  gains,  which  are  included  as  ordinary  income  for tax
purposes,  and may  exclude  amortization  of premium on  certain  fixed  income
securities, which are not reflected in ordinary income for tax purposes. The tax
character of distributions  paid,  including  changes in accumulated  undeclared
distributions to MMP(R) Shareholders, during 2005 and 2004 was as follows:




                    DISTRIBUTIONS PAID IN FISCAL YEAR 2005        DISTRIBUTIONS PAID IN FISCAL YEAR 2004
                    --------------------------------------        --------------------------------------
                    ORDINARY INCOME    LONG-TERM CAPITAL GAINS     ORDINARY INCOME    LONG-TERM CAPITAL GAINS
                    ---------------    -----------------------     ---------------    -----------------------
                                                                                  
Common                $10,602,545                 $0                 $10,790,181              $0
Preferred              $1,937,548                 $0                  $1,029,065              $0




     As of November 30, 2005, the components of  distributable  earnings  (i.e.,
ordinary income and capital  gain/loss)  available to Common and Preferred Stock
Shareholders, on a tax basis, were as follows:




                                     UNDISTRIBUTED               UNDISTRIBUTED              NET UNREALIZED
CAPITAL (LOSS) CARRYFORWARD         ORDINARY INCOME             LONG-TERM GAIN        APPRECIATION/(DEPRECIATION)
---------------------------         ---------------             --------------        --------------------------
                                                                                 
          ($5,431,581)                    $222,609                    $0                     $12,208,984


     At November 30, 2005, the composition of the Fund's $5,431,581  accumulated
realized  capital losses was  $2,297,260,  $982,343,  $1,457,692 and $694,286 in
2000, 2001, 2002 and 2004, respectively. These losses may be carried forward and
offset  against any future  capital  gains through  2008,  2009,  2010 and 2012,
respectively.

     RECLASSIFICATION  OF  ACCOUNTS:  During the year ended  November  30, 2005,
reclassifications  were made in the  Fund's  capital  accounts  to report  these
balances on a tax basis,  excluding  temporary  differences,  as of November 30,
2005.  Additional  adjustments may be required in subsequent  reporting periods.
These  reclassifications  have no impact on the net asset value of the Fund. The
calculation  of net  investment  income  per share in the  financial  highlights
excludes these adjustments. Below are the reclassifications:

                              UNDISTRIBUTED             ACCUMULATED NET REALIZED
PAID-IN CAPITAL          NET INVESTMENT INCOME            GAIN ON INVESTMENTS
---------------          ---------------------            -------------------
    ($44,074)                   $232,840                       ($188,766)

     EXCISE TAX: The Internal  Revenue  Code of 1986,  as amended,  imposes a 4%
nondeductible  excise tax on the Fund to the extent the Fund does not distribute
by the  end of  any  calendar  year  at  least  (1)

                                       23



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
NOTES TO FINANCIAL STATEMENTS (CONTINUED)
------------------------------------------------------------------

98% of the sum of its  net investment income for that year and its capital gains
(both   long-term   and   short-term)  for  its  fiscal  year  and  (2)  certain
undistributed  amounts from  previous years.  The Fund is  subject  to a payment
of an  estimated  $17,000 of Federal excise taxes  attributable to calendar year
2005.  During the fiscal year which ended on  November  30, 2005,  the Fund paid
$43,594 of Federal  excise  taxes attributable to calendar year 2004.

3.   INVESTMENT ADVISORY FEE,  ADMINISTRATION FEE, TRANSFER AGENT FEE, CUSTODIAN
     FEE, DIRECTORS' FEES AND CHIEF COMPLIANCE OFFICER FEE

     Flaherty  &  Crumrine  Incorporated  (the  "Adviser")  serves as the Fund's
investment adviser. The Fund pays the Adviser a monthly fee at an annual rate of
0.625% of the value of the Fund's average monthly total net assets  available to
Common  and  Preferred  Stock up to $100  million  and 0.50% of the value of the
Fund's average monthly total net assets  available to Common and Preferred Stock
in excess of $100 million.

     PFPC  Inc.,  a member  of the PNC  Financial  Services  Group,  Inc.  ("PNC
Financial Services"), serves as the Fund's Administrator. As Administrator, PFPC
Inc.  calculates the net asset value of the Fund's shares attributable to Common
Stock and  generally  assists in all  aspects of the Fund's  administration  and
operation.  As compensation for PFPC Inc.'s services as Administrator,  the Fund
pays  PFPC  Inc.  a monthly  fee at an  annual  rate of 0.10% of the first  $200
million of the Fund's  average  weekly total managed  assets,  0.04% of the next
$300 million of the Fund's  average  weekly total managed  assets,  0.03% of the
next $500 million of the Fund's average weekly total managed assets and 0.02% on
the Fund's average weekly total managed assets above $1 billion.

     PFPC Inc. also serves as the Fund's Common Stock  dividend-paying agent and
registrar  (Transfer  Agent).  As compensation  for PFPC Inc.'s services through
November 30,  2005,  the Fund paid PFPC Inc. a fee at an annual rate of 0.02% of
the first $150 million of the Fund's average weekly net assets  attributable  to
Common Stock,  0.01% of the next $350 million of the Fund's  average  weekly net
assets  attributable  to Common  Stock,  0.005% of the next $500  million of the
Fund's average weekly net assets attributable to Common Stock and 0.0025% of the
Fund's average weekly net assets  attributable to Common Stock above $1 billion,
plus certain out of pocket expenses.  Effective  December 1, 2005, the Fund pays
PFPC Inc.  a fee at an annual  rate of 0.02% of the first  $150  million  of the
Fund's average weekly net assets  attributable  to Common Stock,  0.0075% of the
next $350 million of the Fund's average weekly net assets attributable to Common
Stock,  and  0.0025% of the Fund's  average  weekly net assets  attributable  to
Common Stock above $500 million.  For the purpose of  calculating  such fee, the
Fund's average weekly net assets  attributable  to Common Stock are deemed to be
the average  weekly value of the Fund's total assets minus the sum of the Fund's
liabilities,  and accumulated  dividends,  if any, on Preferred  Stock. For this
calculation,  the  Fund's  liabilities  are  deemed  to  include  the  aggregate
liquidation preference of any outstanding Fund preferred shares.

     PFPC Trust Company  ("PFPC  Trust")  serves as the Fund's  custodian.  PFPC
Trust is an indirect subsidiary of PNC Financial  Services.  As compensation for
PFPC Trust's  services as  custodian,  the Fund pays PFPC Trust a monthly fee at
the annual rate of 0.010% of the first $200 million of the Fund's average weekly
total  managed  assets,  0.008% of the next $300  million of the Fund's  average
weekly  total  managed  assets,  0.006% of the next $500  million  of the Fund's
average  weekly total  managed  assets and 0.005% of

                                       24



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                       NOTES TO FINANCIAL STATEMENTS (CONTINUED)
              ------------------------------------------------------------------

the Fund's  average  weekly total managed assets above $1 billion.

     The Fund  currently  pays each  Director who is not a director,  officer or
employee of the Adviser a fee of $9,000 per annum,  plus $500 for each in-person
meeting of the Board of Directors or any committee  and $150 for each  telephone
meeting.  The Audit  Committee  Chairman  receives an  additional  annual fee of
$2,500.  The Fund also  reimburses  all Directors  for travel and  out-of-pocket
expenses incurred in connection with such meetings.

     On October 21, 2005,  the Board of Directors  accepted the  resignation  of
Peter C. Stimes as Chief  Compliance  Officer  ("CCO") and Vice President of the
Fund and elected  Chad C. Conwell as the new CCO.  The Fund  currently  pays the
Adviser a fee of $37,500 per annum for CCO services and reimburses out-of-pocket
expenses incurred in connection with providing services in this role.

4.   PURCHASES AND SALES OF SECURITIES

     For the year ended  November 30, 2005,  the cost of purchases  and proceeds
from  sales  of  securities   excluding   short-term   investments,   aggregated
$119,950,344 and $125,752,819, respectively.

     At November 30, 2005,  the aggregate  cost of securities for federal income
tax purposes was $198,501,069,  the aggregate gross unrealized  appreciation for
all  securities  in  which  there  is an  excess  of  value  over  tax  cost was
$17,088,228 and the aggregate gross  unrealized  depreciation for all securities
in which there is an excess of tax cost over value was $4,879,244.

5.   COMMON STOCK

     At November  30, 2005,  240,000,000  shares of $0.01 par value Common Stock
were authorized.




     Common Stock transactions were as follows:
                                                                             YEAR ENDED                     YEAR ENDED
                                                                               11/30/05                      11/30/04
                                                                       ------------------------     -----------------------
                                                                        SHARES         AMOUNT       SHARES        AMOUNT
                                                                       --------      ----------     ------      ----------
                                                                                                    
Shares issued under the Dividend Reinvestment and Cash Purchase Plan     90,012      $1,150,181     125,523     $1,637,955
                                                                       --------      ----------     -------     ----------


6.   MONEY MARKET CUMULATIVE PREFERRED(TM) STOCK (MMP(R))

     The Fund's  Articles  of  Incorporation  authorize  the  issuance  of up to
10,000,000  shares of $0.01 par value preferred  stock.  The MMP(R) is senior to
the Common Stock and results in the  financial  leveraging  of the Common Stock.
Such  leveraginG  tends to magnify  both the risks and  opportunities  to Common
Stock Shareholders. Dividends on shares of MMP(R) are cumulative.

     The Fund is required to meet certain asset  coverage  tests with respect to
the MMP(R).  If the Fund fails to meet thesE  requirements  and does not correct
such failure,  the Fund may be required to redeem, in part or in full, MMP(R) at
a redemptioN price of $100,000 per share plus an amount equal to the accumulated
and  unpaid  dividends  on such  shares  in  order to meet  these  requirements.
Additionally,  failure to meet the

                                       25



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
NOTES TO FINANCIAL STATEMENTS (CONTINUED)
------------------------------------------------------------------

foregoing asset  requirements could restrict the Fund's ability to pay dividends
to Common Stock  Shareholders and could lead to sales of portfolio securities at
inopportune times.

     If the Fund allocates any net gains or income  ineligible for the Dividends
Received  Deduction  to  shares  of the  MMP(R),  thE Fund is  required  to make
additional distributions to MMP(R) Shareholders or to pay a higher dividend rate
in amounts needed tO provide a return,  net of tax, equal to the return had such
originally  paid   distributions   been  eligible  for  the  Dividends  Received
Deduction.

     An auction of the MMP(R) is generally held every 49 days.  Existing  MMP(R)
Shareholders  may submit an order to hold,  bid OR sell such shares at par value
on each auction date. MMP(R) Shareholders may also trade shares in the secondary
market, if any, between auction dates.

     At  November  30,  2005,  700  shares of  MMP(R)  were  outstanding  at the
annualized rate of 3.00%. The dividend rate, as set bY the auction  process,  is
generally expected to vary with short-term  interest rates. These rates may vary
in a manner  unrelated to the income received on the Fund's assets,  which could
have either a beneficial  or  detrimental  impact on net  investment  income and
gains  available  to  Common  Stock  Shareholders.  While  the Fund  expects  to
structure its portfolio  holdings and hedging  transactions to lessen such risks
to Common Stock  Shareholders,  there can be no assurance that such results will
be attained.

7.   PORTFOLIO INVESTMENTS, CONCENTRATION AND INVESTMENT QUALITY

     The  Fund  invests  primarily  in  a  diversified  portfolio  of  preferred
securities.   This  includes  traditional  preferred  stocks  eligible  for  the
inter-corporate   dividends   received   deduction  ("DRD")  and  fully  taxable
("hybrid") preferred securities.  Under normal markets conditions,  at least 80%
of the value of the Fund's net assets will be invested in preferred  securities.
Also,  under  normal  market  conditions,  the Fund  invests at least 25% of its
assets  in  securities  issued  by  companies  in  the  utility  industry  and a
significant percentage, but no more than 25% of its assets, in securities issued
by companies in the banking  industry.  The Fund's  portfolio  may  therefore be
subject to greater risk and market  fluctuation  than a portfolio of  securities
representing a broader range of investment alternatives.

     The Fund may  invest  up to 25% of its  assets at the time of  purchase  in
securities rated below investment grade. These securities must be rated at least
either "Ba3" by Moody's  Investors  Service,  Inc. or "BB-" by Standard & Poor's
or, if unrated,  judged to be  comparable  in quality by the Adviser,  in either
case at the time of purchase.  However,  these  securities  must be issued by an
issuer having a class of senior debt rated investment grade outstanding.

     The Fund may invest up to 15% of its  assets in common  stocks  and,  under
normal market conditions, up to 20% of its assets in debt securities. Certain of
its investments in hybrid,  i.e.,  fully taxable,  preferred  securities will be
subject to the  foregoing  20%  limitation to the extent that, in the opinion of
the Adviser, such investments are deemed to be debt-like in key characteristics.
Typically,  a security  will not be  considered  debt-like  (a) if an issuer can
defer payment of income for eighteen months or more without  triggering an event
of default and (b) if such issue is a junior and fully subordinated liability of
an issuer or its ultimate guarantor.

     In addition to foreign money market  securities,  the Fund may invest up to
30% of its total assets in the securities of companies organized or having their
principal place of business  outside the United States.  All foreign  securities
held by the Fund will be denominated in U.S. dollars.

                                       26



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                       NOTES TO FINANCIAL STATEMENTS (CONTINUED)
              ------------------------------------------------------------------

8.   SPECIAL INVESTMENT TECHNIQUES

     The Fund may employ certain  investment  techniques in accordance  with its
fundamental  investment  policies.  These may include the use of when-issued and
delayed delivery transactions.  Securities purchased or sold on a when-issued or
delayed  delivery  basis may be  settled  within  45 days  after the date of the
transaction.  Such  transactions  may  expose  the  Fund to  credit  and  market
valuation  risk  greater than that  associated  with  regular  trade  settlement
procedures.  The Fund may also enter into  transactions,  in accordance with its
investment  policies,  involving  any or all of the  following:  short  sales of
securities,  futures  contracts,  interest rate swaps, swap futures,  options on
futures  contracts,   options  on  securities,   swaptions  and  certain  credit
derivative transactions including,  but not limited to, the purchase and sale of
credit  protection.  As in  the  case  of  when-issued  securities,  the  use of
over-the-counter derivatives, such as interest rate swaps, swaptions, and credit
default swaps may expose the Fund to greater credit, operations,  liquidity, and
valuation  risk than is the case with  regulated,  exchange  traded  futures and
options.   These   transactions  are  used  for  hedging  or  other  appropriate
risk-management  purposes,  or, under certain other  circumstances,  to increase
return.  No assurance  can be given that such  transactions  will achieve  their
desired purposes or will result in an overall reduction of risk to the Fund.

9.   SECURITIES LENDING

     The Fund may lend up to 15% of its total assets (including the value of the
loan  collateral)  to  certain  qualified  brokers  in order to earn  additional
income. The Fund receives compensation in the form of fees or interest earned on
the  investment  of any cash  collateral  received.  The Fund also  continues to
receive  interest and  dividends on the  securities  loaned.  The Fund  receives
collateral in the form of cash or securities  with a market value at least equal
to the market value of the securities on loan,  including accrued  interest.  In
the event of default or bankruptcy by the  borrower,  the Fund could  experience
delays and costs in recovering the loaned securities or in gaining access to the
collateral.  The Fund has the right under the lending  agreement  to recover the
securities  from the  borrower on demand.  There were no  securities  lent as of
November 30, 2005 or during the year then ended.

                                       27



             REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


The Board of Directors and Shareholders
     Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated:

     We have  audited  the  accompanying  statement  of assets and  liabilities,
including the  portfolio of  investments,  of the Flaherty & Crumrine  Preferred
Income Opportunity Fund  Incorporated,  as of November 30, 2005, and the related
statement of  operations  for the year then ended,  statements of changes in net
assets  for  each of the  years  in the  two-year  period  then  ended,  and the
financial  highlights for each of the years in the five-year  period then ended.
These financial  statements and financial  highlights are the  responsibility of
the  Fund's  management.  Our  responsibility  is to express an opinion on these
financial statements and financial highlights based on our audits.

     We  conducted  our audits in  accordance  with the  standards of the Public
Company Accounting Oversight Board (United States). Those standards require that
we plan and perform the audit to obtain  reasonable  assurance about whether the
financial statements and financial highlights are free of material misstatement.
An audit includes  examining,  on a test basis,  evidence supporting the amounts
and   disclosures  in  the  financial   statements.   Our  procedures   included
confirmation of securities owned as of November 30, 2005 by correspondence  with
the custodian and brokers,  or by other  appropriate  auditing  procedures where
replies from brokers were not  received.  An audit also  includes  assessing the
accounting principles used and significant estimates made by management, as well
as evaluating the overall financial statement presentation.  We believe that our
audits provide a reasonable basis for our opinion.

     In our opinion,  the financial statements and financial highlights referred
to above present fairly, in all material respects, the financial position of the
Flaherty  & Crumrine  Preferred  Income  Opportunity  Fund  Incorporated,  as of
November 30, 2005, the results of its operations,  changes in its net assets and
financial  highlights for each of the years  described  above in conformity with
accounting principles generally accepted in the United States of America.







/S/KPMG LLP
KPMG LLP
Boston, Massachusetts

January 20, 2006


                                       28






--------------------------------------------------------------------------------
                           Flaherty & Crumrine Preferred Income Opportunity Fund
                                       SUPPLEMENTARY TAX INFORMATION (UNAUDITED)
                                       -----------------------------------------

     Distributions  to Common Stock and MMP(R) are  characterized as follows for
purposes of Federal income taxes (as a percentagE of total distributions):



     FISCAL YEAR 2005
     ----------------
                                                INDIVIDUAL                         CORPORATION
                                                ----------                         -----------
                                                       ORDINARY                           ORDINARY
                                           QDI          INCOME               DRD           INCOME
                                           ---          ------               ---           ------
                                                                                
     MMP(R)                               87.09%        12.91%              85.24%          14.76%
     Common Stock                         87.09%        12.91%              85.24%          14.76%





     CALENDAR YEAR 2005
     ------------------

                                                INDIVIDUAL                         CORPORATION
                                                ----------                         -----------
                                                       ORDINARY                           ORDINARY
                                           QDI          INCOME               DRD           INCOME
                                           ---          ------               ---           ------
                                                                                
     MMP(R)                               87.09%        12.91%              85.24%          14.76%
     Common Stock                         86.57%        13.43%              84.66%          15.34%



     For  individual  investors,  a portion of the  distributions  consisted  of
Qualified  Dividend  Income  ("QDI")  eligible  for the maximum 15% personal tax
rate.

     For corporate investors, a portion of the distributions consisted of income
eligible for the inter-corporate Dividends Received Deduction ("DRD").

                                       29



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
ADDITIONAL INFORMATION (UNAUDITED)
------------------------------------------------------------------

DIVIDEND REINVESTMENT AND CASH PURCHASE PLAN

     Under the Fund's Dividend Reinvestment and Cash Purchase Plan (the "Plan"),
a  shareholder  whose Common Stock is registered in their own name will have all
distributions  reinvested  automatically  by PFPC Inc.  as agent under the Plan,
unless the  shareholder  elects to receive cash.  Distributions  with respect to
shares  registered in the name of a broker-dealer  or other nominee (that is, in
"street  name") may be reinvested by the broker or nominee in additional  shares
under the Plan,  but only if the  service is  provided by the broker or nominee,
unless the shareholder  elects to receive  distributions  in cash. A shareholder
who holds Common Stock  registered  in the name of a broker or other nominee may
not be able to  transfer  the  Common  Stock to another  broker or  nominee  and
continue to participate in the Plan.  Investors who own Common Stock  registered
in street  name should  consult  their  broker or nominee for details  regarding
reinvestment.

     The number of shares of Common Stock  distributed  to  participants  in the
Plan in lieu of a cash dividend is determined in the following manner.  Whenever
the market price per share of the Fund's Common Stock is equal to or exceeds the
net asset value per share on the valuation  date,  participants in the Plan will
be issued new shares  valued at the higher of net asset value or 95% of the then
current market value. Otherwise,  PFPC Inc. will buy shares of the Fund's Common
Stock in the open market,  on the New York Stock  Exchange or  elsewhere,  on or
shortly after the payment date of the dividend or  distribution  and  continuing
until the  ex-dividend  date of the Fund's next  distribution  to holders of the
Common Stock or until it has expended  for such  purchases  all of the cash that
would otherwise be payable to the  participants.  The number of purchased shares
that will then be credited to the  participants'  accounts  will be based on the
average per share purchase price of the shares so purchased, including brokerage
commissions.  If PFPC Inc.  commences  purchases in the open market and the then
current  market price of the shares (plus any estimated  brokerage  commissions)
subsequently  exceeds their net asset value most recently  determined before the
completion of the  purchases,  PFPC Inc. will attempt to terminate  purchases in
the  open  market  and  cause  the  Fund to  issue  the  remaining  dividend  or
distribution  in shares.  In this case,  the  number of shares  received  by the
participant  will be based on the  weighted  average  of prices  paid for shares
purchased  in the  open  market  and the  price at which  the  Fund  issues  the
remaining  shares.  These  remaining  shares  will be  issued by the Fund at the
higher of net asset value or 95% of the then current market value.

     Plan  participants are not subject to any charge for reinvesting  dividends
or capital gains  distributions.  Each Plan participant  will,  however,  bear a
proportionate  share of  brokerage  commissions  incurred  with  respect to PFPC
Inc.'s open market purchases in connection with the reinvestment of dividends or
capital gains  distributions.  For the year ended  November 30, 2005,  $1,151 in
brokerage commissions were incurred.

     The automatic  reinvestment  of dividends  and capital gains  distributions
will not relieve Plan  participants of any income tax that may be payable on the
dividends or capital  gains  distributions.  A  participant  in the Plan will be
treated for Federal  income tax  purposes as having  received,  on the

                                       30



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                  ADDITIONAL INFORMATION (UNAUDITED) (CONTINUED)
              ------------------------------------------------------------------

dividend payment date, a dividend or distribution in an amount equal to the cash
that the participant could have received instead of shares.

     In addition to acquiring shares of Common Stock through the reinvestment of
cash dividends and  distributions,  a shareholder may invest any further amounts
from $100 to $3,000  semi-annually  at the then  current  market price in shares
purchased  through the Plan.  Such  semi-annual  investments  are subject to any
brokerage commission charges incurred by PFPC Inc. under the Plan.

     A  shareholder  whose Common Stock is registered in his or her own name may
terminate  participation  in the  Plan at any time by  notifying  PFPC  Inc.  in
writing,  by completing  the form on the back of the Plan account  statement and
forwarding it to PFPC Inc., or by calling PFPC Inc. directly. A termination will
be  effective  immediately  if notice is received by PFPC Inc.  not less than 10
days before any dividend or distribution record date. Otherwise, the termination
will be  effective,  and  only  with  respect  to any  subsequent  dividends  or
distributions,  on the first day after the  dividend  or  distribution  has been
credited to the  participant's  account in additional  shares of the Fund.  Upon
termination and according to a participant's instructions, PFPC Inc. will either
(a) issue  certificates for the whole shares credited to the shareholder's  Plan
account and a check representing any fractional shares or (b) sell the shares in
the market.  Shareholders  who hold  Common  Stock  registered  in the name of a
broker or other  nominee  should  consult  their  broker or nominee to terminate
participation.

     The  Plan  is  described  in  more  detail  in the  Fund's  Plan  brochure.
Information   concerning   the  Plan  may  be   obtained   from  PFPC  Inc.   at
1-800-331-1710.

PROXY VOTING POLICIES AND PROXY VOTING RECORD ON FORM N-PX

     The Fund files Form N-PX with its complete  proxy voting  record for the 12
months ended June 30th,  no later than August 31st of each year.  The Fund filed
its latest Form N-PX with the  Securities  and  Exchange  Commission  ("SEC") on
August 17, 2005.  This filing,  as well as the Fund's proxy voting  policies and
procedures,  are available  (i) without  charge,  upon  request,  by calling the
Fund's  transfer  agent at  1-800-331-1710  and  (ii) on the  SEC's  website  at
WWW.SEC.GOV.  In addition,  the Fund's proxy voting  policies and procedures are
available on the Fund's website at WWW.PREFERREDINCOME.COM.

PORTFOLIO SCHEDULE ON FORM N-Q

         The Fund files a complete  schedule of portfolio  holdings with the SEC
for the first and third  fiscal  quarters  on Form N-Q,  the latest of which was
filed for the quarter ended August 31, 2005. The Fund's Form N-Q is available on
the SEC's  website at  WWW.SEC.GOV  or may be viewed and obtained from the SEC's
Public  Reference  Room in Washington  D.C.  Information on the operation of the
Public Reference Section may be obtained by calling 1-800-SEC-0330.

                                       31



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
ADDITIONAL INFORMATION (UNAUDITED) (CONTINUED)
------------------------------------------------------------------

PORTFOLIO MANAGEMENT TEAM

         In managing the  day-to-day  operations of the Fund, the Adviser relies
on the expertise of its team of money  management  professionals,  consisting of
Messrs.  Crumrine,  Ettinger,  Stone and Chadwick.  Effective as of November 30,
2005,  Peter  C.  Stimes  ceased  being  involved  in  managing  the  day-to-day
operations  of the Fund.  The  professional  backgrounds  of each  member of the
management  team are  included  in the  "Information  about Fund  Directors  and
Officers" section of this report beginning on page 33.

CERTIFICATIONS

         Donald  F.  Crumrine,  as  the  Fund's  Chief  Executive  Officer,  has
certified to the New York Stock  Exchange  that,  as of May 18, 2005, he was not
aware of any  violation  by the Fund of  applicable  NYSE  corporate  governance
listing standards.  The Fund's reports to the SEC on Forms N-CSR and N-Q contain
certifications by the Fund's principal executive officer and principal financial
officer  that  relate to the  Fund's  disclosure  in such  reports  and that are
required by rule 30a-2(a) under the 1940 Act.

                                       32



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                  ADDITIONAL INFORMATION (UNAUDITED) (CONTINUED)
                                  ----------------------------------------------

INFORMATION ABOUT FUND DIRECTORS AND OFFICERS
         The business and affairs of the Fund are managed under the direction of
the Fund's Board of  Directors.  Information  pertaining  to the  Directors  and
officers of the Fund is set forth below.



                                                                     PRINCIPAL      NUMBER OF FUNDS
                                             TERM OF OFFICE        OCCUPATION(S)    IN FUND COMPLEX
NAME, ADDRESS,             POSITION(S)        AND LENGTH OF         DURING PAST        OVERSEEN               OTHER DIRECTORSHIPS
AND AGE                  HELD WITH FUND        TIME SERVED*         FIVE YEARS        BY DIRECTOR               HELD BY DIRECTOR
-------                  --------------        ------------         ----------        -----------               ----------------
                                                                                            
NON-INTERESTED
DIRECTORS:
----------

DAVID GALE                 Director        Class I Director     President & CEO of         4               Metromedia International
Delta Dividend Group, Inc.                since January 1997    Delta Dividend                             Group, Inc.
220 Montgomery Street                                           Group, Inc. (investments).                 (telecommunications).
Suite 426                                                                                                  Flaherty & Crumrine
San Francisco, CA 94104                                                                                    Preferred Income Fund,
Age: 56                                                                                                    Flaherty & Crumrine/
                                                                                                           Claymore Preferred
                                                                                                           Securities Income Fund
                                                                                                           and Flaherty & Crumrine/
                                                                                                           Claymore Total Return
                                                                                                           Fund.

MORGAN GUST                Director        Class III Director   President of Giant         4               Flaherty & Crumrine
Giant Industries, Inc.                    since February 1992   Industries, Inc. (petroleum                Preferred Income Fund,
23733 N. Scottsdale Road                                        refining and marketing) since              Flaherty & Crumrine/
Scottsdale, AZ 85255                                            March 2002, and for more                   Claymore Preferred
Age: 58                                                         than five years prior thereto,             Securities Income Fund
                                                                Executive Vice President,                  and Flaherty & Crumrine/
                                                                and various other Vice                     Claymore Total Return
                                                                President positions at                     Fund.
                                                                Giant Industries, Inc.
-----------------------
* The Fund's Board of Directors is divided into three classes, each class having
a term of three years. Each year the term of office of one class expires and the
successor or successors  elected to such class serve for a three year term.  The
three year term for each class expires as follows:
                                 CLASS I DIRECTOR  - three year term  expires at
                                 the Fund's 2006 Annual Meeting of Shareholders;
                                 director  may  continue  in  office  until  his
                                 successor is duly elected and qualified.  CLASS
                                 II  DIRECTORS - three year term  expires at the
                                 Fund's  2007  Annual  Meeting of  Shareholders;
                                 directors  may  continue in office  until their
                                 successors  are  duly  elected  and  qualified.
                                 CLASS III  DIRECTORS - three year term  expires
                                 at  the   Fund's   2008   Annual   Meeting   of
                                 Shareholders;  directors may continue in office
                                 until  their  successors  are duly  elected and
                                 qualified.


                                       33



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
ADDITIONAL INFORMATION (UNAUDITED) (CONTINUED)
----------------------------------------------



                                                                     PRINCIPAL      NUMBER OF FUNDS
                                             TERM OF OFFICE        OCCUPATION(S)    IN FUND COMPLEX
NAME, ADDRESS,             POSITION(S)        AND LENGTH OF         DURING PAST        OVERSEEN               OTHER DIRECTORSHIPS
AND AGE                  HELD WITH FUND        TIME SERVED*         FIVE YEARS        BY DIRECTOR               HELD BY DIRECTOR
-------                  --------------        ------------         ----------        -----------               ----------------
                                                                                            
NON-INTERESTED
DIRECTORS:
----------

KAREN H. HOGAN+            Director        Class III Director   Retired; Community         4               Flaherty & Crumrine
301 E. Colorado Boulevard                 since April 2005      Volunteer; from September                  Preferred Income Fund,
Suite 720                                                       1985 to January 1997,                      Flaherty & Crumrine/
Pasadena, CA 91101                                              Senior Vice President of                   Claymore Preferred
Age: 44                                                         Preferred Stock Origination                Securities Income Fund
                                                                at Lehman Brothers and                     and Flaherty & Crumrine/
                                                                previously, Vice President of              Claymore Total Return
                                                                New Product Development.                   Fund.

ROBERT F. WULF             Director        Class II Director    Financial Consultant;      4               Flaherty & Crumrine
3560 Deerfield Drive South                since February 1992   Trustee, University of                     Preferred Income Fund,
Salem, OR 97302                                                 Oregon Foundation;                         Flaherty & Crumrine/
Age: 68                                                         Trustee, San Francisco                     Claymore Preferred
                                                                Theological Seminary.                      Securities Income Fund
                                                                                                           and Flaherty & Crumrine/
                                                                                                           Claymore Total Return
                                                                                                           Fund.

* The Fund's Board of Directors is divided into three classes, each class having
a term of three years. Each year the term of office of one class expires and the
successor or successors  elected to such class serve for a three year term.  The
three year term for each class expires as follows:
                                 CLASS I DIRECTOR  - three year term  expires at
                                 the Fund's 2006 Annual Meeting of Shareholders;
                                 director  may  continue  in  office  until  his
                                 successor is duly elected and qualified.  CLASS
                                 II  DIRECTORS - three year term  expires at the
                                 Fund's  2007  Annual  Meeting of  Shareholders;
                                 directors  may  continue in office  until their
                                 successors  are  duly  elected  and  qualified.
                                 CLASS III  DIRECTORS - three year term  expires
                                 at  the   Fund's   2008   Annual   Meeting   of
                                 Shareholders;  directors may continue in office
                                 until  their  successors  are duly  elected and
                                 qualified.


+ As a  Director,  represents  holders  of shares  of the  Fund's  Money  Market
Cumulative Preferred(TM) Stock.


                                       34



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                  ADDITIONAL INFORMATION (UNAUDITED) (CONTINUED)
                                  ----------------------------------------------



                                                                     PRINCIPAL      NUMBER OF FUNDS
                                             TERM OF OFFICE        OCCUPATION(S)    IN FUND COMPLEX
NAME, ADDRESS,             POSITION(S)        AND LENGTH OF         DURING PAST        OVERSEEN               OTHER DIRECTORSHIPS
AND AGE                  HELD WITH FUND        TIME SERVED*         FIVE YEARS        BY DIRECTOR               HELD BY DIRECTOR
-------                  --------------        ------------         ----------        -----------               ----------------
                                                                                            
INTERESTED
DIRECTOR:
---------

DONALD F. CRUMRINE+, ++    Director,       Class II Director    Chairman of the Board      4               Flaherty & Crumrine
301 E. Colorado Boulevard   Chairman      since February 1992   and Director of Flaherty &                 Preferred Income Fund,
Suite 720                 of the Board                          Crumrine Incorporated.                     Flaherty & Crumrine/
Pasadena, CA 91101         and Chief                                                                       Claymore Preferred
Age: 58                 Executive Officer                                                                  Securities Income Fund
                                                                                                           and Flaherty & Crumrine/
                                                                                                           Claymore Total Return
                                                                                                           Fund.

* The Fund's Board of Directors is divided into three classes, each class having
a term of three years. Each year the term of office of one class expires and the
successor or successors  elected to such class serve for a three year term.  The
three year term for each class expires as follows:
                                 CLASS I DIRECTOR  - three year term  expires at
                                 the Fund's 2006 Annual Meeting of Shareholders;
                                 director  may  continue  in  office  until  his
                                 successor is duly elected and qualified.  CLASS
                                 II  DIRECTORS - three year term  expires at the
                                 Fund's  2007  Annual  Meeting of  Shareholders;
                                 directors  may  continue in office  until their
                                 successors  are  duly  elected  and  qualified.
                                 CLASS III  DIRECTORS - three year term  expires
                                 at  the   Fund's   2008   Annual   Meeting   of
                                 Shareholders;  directors may continue in office
                                 until  their  successors  are duly  elected and
                                 qualified.

+ As a  Director,  represents  holders  of shares  of the  Fund's  Money  Market
Cumulative Preferred(TM) Stock.
++ "Interested  person" of the Fund as defined in the Investment  Company Act of
1940.  Mr.  Crumrine  is  considered  an  "interested  person"  because  of  his
affiliation  with  Flaherty  &  Crumrine  Incorporated  which acts as the Fund's
investment adviser.


                                       35



--------------------------------------------------------------------------------
Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
ADDITIONAL INFORMATION (UNAUDITED) (CONTINUED)
----------------------------------------------




                                                                     PRINCIPAL
                                             TERM OF OFFICE        OCCUPATION(S)
NAME, ADDRESS,             POSITION(S)        AND LENGTH OF         DURING PAST
AND AGE                  HELD WITH FUND        TIME SERVED*         FIVE YEARS
-------                  --------------        ------------         ----------
                                                       
OFFICERS:
---------

ROBERT M. ETTINGER             President          Since                President and Director of Flaherty &
301 E. Colorado Boulevard                      October 2002            Crumrine Incorporated.
Suite 720
Pasadena, CA 91101
Age: 47

R. ERIC CHADWICK             Chief Financial       Since               Vice President of Flaherty & Crumrine
301 E. Colorado Boulevard      Officer, Vice   October 2002            Incorporated since August 2001, and
Suite 720                        President                             portfolio manager of Flaherty & Crumrine
Pasadena, CA 91101             and Treasurer                           Incorporated.
Age: 30

CHAD C. CONWELL              Chief Compliance      Since               Chief Compliance Officer of Flaherty &
301 E. Colorado Boulevard      Officer, Vice     July 2005             Crumrine Incorporated since September
Suite 720                      President and                           2005; since July 2005, Vice President of
Pasadena, CA 91101               Secretary                             Flaherty & Crumrine Incorporated; from
Age: 33                                                                September 1998 through June 2005,
                                                                       Attorney with Paul, Hastings, Janofsky
                                                                       & Walker LLP.

BRADFORD S. STONE             Vice President       Since               Vice President of Flaherty & Crumrine
392 Springfield Avenue         and Assistant     July 2003             Incorporated since May 2003; from June
Mezzanine Suite                  Treasurer                             2001 to April 2003, Director of U.S. Market
Summit, NJ 07901                                                       Strategy at Barclays Capital; from February
Age: 46                                                                1987 to June 2001 Vice President of Goldman,
                                                                       Sachs & Company as Director of U.S. Interest
                                                                       Rate Strategy and, previously, Vice President
                                                                       of Interest Rate Product Sales.

CHRISTOPHER D. RYAN           Vice President       Since               Vice President of Flaherty & Crumrine
301 E. Colorado Boulevard                        April 2005            Incorporated since February 2004;
Suite 720                                                              October 2002 to February 2004, Product
Pasadena, CA 91101                                                     Analyst of Flaherty & Crumrine Incorporated.
Age: 38                                                                From 1999 to 2002 graduate student.

LAURIE C. LODOLO                 Assistant         Since               Assistant Compliance Officer of Flaherty &
301 E. Colorado Boulevard       Compliance       July 2004             Crumrine Incorporated since August 2004;
Suite 720                   Officer, Assistant                         since February 2004, Secretary of Flaherty
Pasadena, CA 91101            Treasurer and                            & Crumrine Incorporated; Account
Age: 42                     Assistant Secretary                        Administrator of Flaherty & Crumrine
                                                                       Incorporated.


                                       36



--------------------------------------------------------------------------------
              Flaherty & Crumrine Preferred Income Opportunity Fund Incorporated
                                  ADDITIONAL INFORMATION (UNAUDITED) (CONTINUED)
              ------------------------------------------------------------------


AMENDMENTS TO CHARTER AND BYLAWS

     In  addition  to the changes to the Fund's  Charter  that were  approved by
Shareholders at the April 21, 2005 Annual Meeting of Shareholders,  the Board of
Directors approved Articles  Supplementary to the Fund's Charter and Amended and
Restated  Bylaws  ("Bylaws")  at its April 21, 2005  meeting.  Among the changes
reflected  in the  Fund's  Bylaws are a bylaw  amendment  and  related  Articles
Supplementary  reflecting  the  Board's  determination  to  opt  in  to  certain
provisions of the Maryland  Unsolicited  Takeover Act. Such action provides that
(1) the  number of  directors  can be fixed only by the Board and (2) a director
elected by the Board to fill a Board  vacancy  holds office until the end of the
term of the class to which the director has been elected  (rather than until the
next annual meeting).

     At its April 21, 2005 Board  meeting,  the Board also approved an amendment
to the Bylaws to reserve  exclusively  to the  directors  the power to amend the
by-laws,  which  previously  could be  amended by either  the  directors  or the
holders  of a  majority  of the  outstanding  shares  of the Fund.  This  change
enhances the Board's ability to control Fund operations, including the manner in
which  shareholder  meetings are  conducted  and the  procedure  for setting the
agenda for those meetings,  as well as the Board nomination process and the vote
required to remove a director.  At the same meeting,  the Board also approved an
amendment to the Bylaws to clarify  certain  aspects of the calling of a Special
Meeting of Shareholders.  Specifically, such Bylaw amendment clarifies that if a
shareholder  or group  of  shareholders  has  requested  and paid for a  Special
Meeting of Shareholders,  another  Shareholder cannot add an additional proposal
to the proxy statement for that meeting.

     The Board  determined  that the changes to the Bylaws and related  Articles
Supplementary  provide the Fund with certain additional  protections in the case
of a hostile  takeover bid to gain control of the Fund and change the  objective
to the detriment of long-term  shareholders.  However,  the Board is aware of no
such hostile takeover bid at the present time.

                                       37



                      [This page intentionally left blank]



                      [This page intentionally left blank]



DIRECTORS
   Donald F. Crumrine, CFA
        Chairman of the Board
   David Gale
   Morgan Gust
   Karen H. Hogan
   Robert F. Wulf, CFA

OFFICERS
   Donald F. Crumrine, CFA
        Chief Executive Officer
   Robert M. Ettinger, CFA
        President
   R. Eric Chadwick,  CFA
        Chief Financial  Officer,
        Vice President and Treasurer
   Chad C. Conwell
        Chief Compliance Officer,
        Vice President and Secretary
   Bradford S. Stone
        Vice President and
        Assistant  Treasurer
   Christopher D. Ryan, CFA
        Vice President
   Laurie C. Lodolo
        Assistant Compliance Officer,
        Assistant  Treasurer and
        Assistant Secretary

INVESTMENT ADVISER
   Flaherty & Crumrine Incorporated
   e-mail: flaherty@pfdincome.com

QUESTIONS  CONCERNING  YOUR  SHARES OF  FLAHERTY  &
        CRUMRINE  PREFERRED  INCOME OPPORTUNITY FUND?

  o  If your shares are held in a  Brokerage Account,  contact
     your Broker.

  o  If you have physical possession of your shares in certificate form, contact
     the Fund's Transfer Agent & Shareholder Servicing Agent --
              PFPC Inc.
              P.O. Box 43027
              Providence, RI  02940-3027
              1-800-331-1710

THIS  REPORT IS SENT TO  SHAREHOLDERS  OF FLAHERTY & CRUMRINE  PREFERRED  INCOME
OPPORTUNITY  FUND  INCORPORATED FOR THEIR  INFORMATION.  IT IS NOT A PROSPECTUS,
CIRCULAR OR REPRESENTATION INTENDED FOR USE IN THE PURCHASE OR SALE OF SHARES OF
THE FUND OR OF ANY SECURITIES MENTIONED IN THIS REPORT.


[GRAPHIC OMITTED]
LIGHTHOUSE GRAPHIC


                              FLAHERTY & CRUMRINE


                                PREFERRED INCOME
                                OPPORTUNITY FUND


                                     ANNUAL
                                     REPORT


                                NOVEMBER 30, 2005




                        web site: www.preferredincome.com




ITEM 2. CODE OF ETHICS.

     (a) The registrant, as of the end of the period covered by this report, has
         adopted a code of ethics  that  applies to the  registrant's  principal
         executive officer,  principal financial officer,  principal  accounting
         officer  or  controller,   or  persons  performing  similar  functions,
         regardless of whether these  individuals are employed by the registrant
         or a third party.

     (c) There  have been no  amendments,  during  the  period  covered  by this
         report,  to a  provision  of the code of  ethics  that  applies  to the
         registrant's principal executive officer,  principal financial officer,
         principal  accounting  officer or  controller,  or  persons  performing
         similar functions, regardless of whether these individuals are employed
         by the registrant or a third party,  and that relates to any element of
         the code of ethics description.

     (d) The  registrant  has not granted  any  waivers,  including  an implicit
         waiver,  from a  provision  of the code of ethics  that  applies to the
         registrant's principal executive officer,  principal financial officer,
         principal  accounting  officer or  controller,  or  persons  performing
         similar functions, regardless of whether these individuals are employed
         by the registrant or a third party,  that relates to one or more of the
         items set forth in paragraph (b) of this item's instructions.

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.

As of the end of the period  covered by the report,  the  registrant's  board of
directors has determined that David Gale,  Karen H. Hogan and Robert F. Wulf are
each qualified to serve as an audit  committee  financial  expert serving on its
audit  committee  and  that  they  all  are  "independent,"  as  defined  by the
Securities and Exchange Commission.

ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

AUDIT FEES

     (a) The  aggregate  fees  billed for each of the last two fiscal  years for
         professional  services  rendered by the  principal  accountant  for the
         audit of the registrant's annual financial  statements or services that
         are normally  provided by the  accountant in connection  with statutory
         and  regulatory  filings  or  engagements  for those  fiscal  years are
         $36,500 for 2005 and $34,500 for 2004.

AUDIT-RELATED FEES

     (b) The  aggregate  fees  billed in each of the last two  fiscal  years for
         assurance  and related  services by the principal  accountant  that are
         reasonably  related to the performance of the audit of the registrant's
         financial  statements and are not reported under  paragraph (a) of this
         Item are $0 for 2005 and $0 for 2004.




TAX FEES

     (c) The  aggregate  fees  billed in each of the last two  fiscal  years for
         professional  services  rendered by the  principal  accountant  for tax
         compliance, tax advice, and tax planning are $6,400 for 2005 and $6,000
         for 2004.

ALL OTHER FEES

     (d) The  aggregate  fees  billed in each of the last two  fiscal  years for
         products and services provided by the principal accountant,  other than
         the services  reported in  paragraphs  (a) through (c) of this Item are
         $12,100 for 2005 and $11,200 for 2004.  These  services  consist of the
         principal  accountant  providing  a  "Quarterly  Agreed-Upon-Procedures
         Report on Articles Supplementary". These Agreed-Upon-Procedures ("AUP")
         are requirements arising from the Articles  Supplementary  creating the
         Fund's  preferred  stock.  Specifically,  the  credit  rating  agencies
         require  such AUP be  undertaken  in order to  maintain  the  preferred
         stock's rating.

  (e)(1) The Fund's  Audit  Committee  Charter  states that the Audit  Committee
         shall have the duty and power to  pre-approve  all audit and  non-audit
         services to be provided by the auditors to the Fund,  and all non-audit
         services  to be  provided  by the  auditors  to the  Fund's  investment
         adviser and any service providers  controlling,  controlled by or under
         common control with the Fund's investment  adviser that provide ongoing
         services  to  the  Fund,  if the  engagement  relates  directly  to the
         operations and financial reporting of the Fund.

  (e)(2) The percentage of services  described in each of paragraphs (b) through
         (d) of this Item that were approved by the audit committee  pursuant to
         paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X are as follows:

                           (b)  0%

                           (c)  0%

                           (d)  0%

     (f) The  percentage  of  hours  expended  on  the  principal   accountant's
         engagement to audit the registrant's  financial statements for the most
         recent fiscal year that were  attributed  to work  performed by persons
         other than the principal  accountant's  full-time,  permanent employees
         was 0%.

     (g) The aggregate non-audit fees billed by the registrant's  accountant for
         services  rendered to the registrant,  and rendered to the registrant's
         investment  adviser  (not  including  any  sub-adviser  whose  role  is
         primarily portfolio management and is subcontracted with or overseen by
         another investment adviser), and any entity controlling, controlled by,
         or under common control with the adviser that provides ongoing services
         to the  registrant  for  each  of the  last  two  fiscal  years  of the
         registrant was $0 for 2005 and $0 for 2004.

     (h) The  registrant's  audit  committee  of  the  board  of  directors  has
         considered  whether  the  provision  of  non-audit  services  that were
         rendered to the  registrant's  investment  adviser (not  including  any
         sub-adviser  whose  role  is  primarily  portfolio  management  and  is
         subcontracted with or overseen




         by another investment adviser), and any entity controlling,  controlled
         by, or under common control with the  investment  adviser that provides
         ongoing services to the registrant that were not pre-approved  pursuant
         to paragraph  (c)(7)(ii) of Rule 2-01 of  Regulation  S-X is compatible
         with maintaining the principal accountant's independence.

ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.

The registrant has a separately designated audit committee consisting of all the
independent directors of the registrant. The members of the audit committee are:
David Gale, Morgan Gust, Karen H. Hogan, and Robert F. Wulf.


ITEM 6. SCHEDULE OF INVESTMENTS.

Schedule of Investments in securities of unaffiliated issuers as of the close of
the  reporting  period is included as part of the report to  shareholders  filed
under Item 1 of this form.

ITEM 7.  DISCLOSURE  OF PROXY VOTING  POLICIES  AND  PROCEDURES  FOR  CLOSED-END
MANAGEMENT INVESTMENT COMPANIES.

The Proxy Voting Policies are attached herewith.


                  ADVISER PROXY VOTING POLICIES AND PROCEDURES

Flaherty  &  Crumrine  Incorporated  ("F&C")  acts as  discretionary  investment
adviser for various  clients,  including  the  following  six pooled  investment
vehicles (the "Funds"):

As adviser to the "U.S. Funds"      Flaherty & Crumrine Preferred Income Fund
                                    Flaherty & Crumrine Preferred Income
                                    Opportunity Fund
                                    Flaherty & Crumrine/Claymore Preferred
                                    Securities Income Fund
                                    Flaherty & Crumrine/Claymore Total Return
                                    Fund

As sub-adviser
to the "Canadian Funds"             Flaherty & Crumrine Investment Grade Fixed
                                    Income Fund
                                    Flaherty & Crumrine Investment Grade
                                    Preferred Fund

F&C's  authority  to vote  proxies  for its clients is  established  through the
delegation of discretionary  authority under its investment  advisory  contracts
and the U.S. Funds have adopted these policies and procedures for themselves

PURPOSE

These  policies and  procedures are designed to satisfy F&C's duties of care and
loyalty  to  its  clients  with  respect  to  monitoring  corporate  events  and
exercising proxy authority in the best interests of such clients.




In connection with this objective, these policies and procedures are designed to
deal with potential  complexities which may arise in cases where F&C's interests
conflict or appear to conflict with the interests of its clients.

These policies and procedures are also designed to communicate  with clients the
methods and rationale whereby F&C exercises proxy voting authority.

This  document is available to any client or Fund  shareholder  upon request and
F&C will make  available  to such  clients and Fund  shareholders  the record of
F&C's votes promptly upon request and to the extent  required by Federal law and
regulations.

FUNDAMENTAL STANDARD

F&C will be guided by the  principle  that,  in those  cases  where it has proxy
voting authority,  it will vote proxies,  and take such other corporate actions,
consistent  with the  interest of its clients in a manner free of  conflicts  of
interest with the objective of client wealth maximization.

GENERAL

F&C has divided  its  discussion  in this  document  into two major  categories:
voting with respect to common  stock and voting with  respect to senior  equity,
e.g., preferred stock and similar securities. In those events where F&C may have
to take  action  with  respect  to debt,  such as in the case of  amendments  of
covenants or in the case of default, bankruptcy,  reorganization, etc., F&C will
apply the same principles as would apply to common or preferred  stock,  MUTATIS
MUTANDIS.

These  policies  and  procedures   apply  only  where  the  client  has  granted
discretionary  authority  with respect to proxy voting.  Where F&C does not have
authority,  it will  keep  appropriate  written  records  evidencing  that  such
discretionary authority has not been granted.

F&C may choose not to keep written copies of proxy materials that are subject to
SEC regulation and maintained in the SEC's EDGAR database.  In other  instances,
F&C  will  keep  appropriate  written  records  in its  files  or in  reasonably
accessible storage.

Similarly,  F&C will keep in its files, or reasonably  accessible storage,  work
papers and other materials that were significant to F&C in making a decision how
to vote.

For purposes of decision  making,  F&C will assume that each ballot for which it
casts votes is the only  security of an issuer  held by the client.  Thus,  when
casting votes where F&C may have discretionary  authority with regard to several
different  securities of the same issuer,  it may vote securities "in favor" for
those  securities or classes where F&C has  determined the matter in question to
be beneficial  while, at the same time, voting "against" for those securities or
classes  where  F&C  has  determined  the  matter  to  be  adverse.  Such  cases
occasionally  arise, for example, in those instances where a vote is required by
both common and preferred shareholders, voting as separate classes, for a change
in the terms regarding preferred stock issuance.

F&C  will  reach  its  voting   decisions   independently,   after   appropriate
investigation.  It does not generally  intend to delegate its decision making or
to rely on the  recommendations  of any third  party,  although it may take such
recommendations  into  consideration.  F&C may consult with such other  experts,
such as CPA's, investment bankers,  attorneys,  etc., as it regards necessary to
help it reach informed decisions.




Absent good reason to the contrary,  F&C will generally give substantial  weight
to management  recommendations  regarding voting. This is based on the view that
management is usually in the best position to know which  corporate  actions are
in the best interests of common shareholders as a whole.

With  regard  to those  shareholder-originated  proposals  which  are  typically
described as "social, environmental,  and corporate responsibility" matters, F&C
will typically give weight to management's recommendations and vote against such
shareholder  proposals,  particularly  if the adoption of such  proposals  would
bring about burdens or costs not borne by those of the issuer's competitors.

In cases  where the  voting of  proxies  would  not  justify  the time and costs
involved, F&C may refrain from voting. From the individual client's perspective,
this would most  typically  come  about in the case of small  holdings,  such as
might arise in connection  with  spin-offs or other  corporate  reorganizations.
From the perspective of F&C's institutional clients, this envisions cases (1) as
more fully described below where preferred and common shareholders vote together
as a class or (2) other similar or analogous instances.

Ultimately,  all  voting  decisions  are made on a  case-by-case  basis,  taking
relevant considerations into account.

VOTING OF COMMON STOCK PROXIES

F&C categorizes  matters as either routine or non-routine,  which definition may
or may  not  precisely  conform  to the  definitions  set  forth  by  securities
exchanges or other bodies  categorizing  such  matters.  Routine  matters  would
include such things as the voting for directors and the ratification of auditors
and most shareholder  proposals regarding social,  environmental,  and corporate
responsibility  matters.  Absent good reason to the contrary,  F&C normally will
vote in favor of management's recommendations on these routine matters.

Non-routine  matters  might  include,  without  limitation,  such  things as (1)
amendments to management  incentive plans,  (2) the  authorization of additional
common or preferred stock, (3) initiation or termination of barriers to takeover
or  acquisition,  (4)  mergers  or  acquisitions,  (5)  changes  in the state of
incorporation,  (6)  corporate  reorganizations,  and (7)  "contested"  director
slates. In non-routine  matters,  F&C, as a matter of policy, will attempt to be
generally  familiar  with the  questions at issue.  This will  include,  without
limitation,  studying  news  in  the  popular  press,  regulatory  filings,  and
competing proxy  solicitation  materials,  if any.  Non-routine  matters will be
voted on a case-by-case basis, given the complexity of many of these issues.

VOTING OF PREFERRED STOCK PROXIES

Preferred stock, which is defined to include any form of equity senior to common
stock,  generally  has voting  rights  only in the event that the issuer has not
made timely  payments of income and  principal to  shareholders  or in the event
that a  corporation  desires  to  effectuate  some  change  in its  articles  of
incorporation which might modify the rights of preferred stockholders. These are
non-routine in both form and substance.

In the case of  non-routine  matters having to do with the  modification  of the
rights or protections  accorded preferred stock shareholders,  F&C will attempt,
wherever  possible,  to assess the costs and benefits of such  modifications and
will vote in favor of such modifications only if they are in the bests interests
of preferred  shareholders or if the issuer has offered sufficient  compensation
to preferred  stock  shareholders to offset the reasonably  foreseeable  adverse
consequences of such modifications.  A similar




type of analysis would be made in the case where preferred  shares,  as a class,
are entitled to vote on a merger or other substantial transaction.

In the case of the  election  of  directors  when timely  payments to  preferred
shareholders have not been made ("contingent  voting"),  F&C will cast its votes
on  a  case-by-case   basis  after   investigation  of  the  qualifications  and
independence of the persons standing for election.

Routine matters  regarding  preferred  stock are the exception,  rather than the
rule,  and  typically  arise when the  preferred  and common  shareholders  vote
together as a class on such matters as election of directors. F&C will vote on a
case-by-case  basis,  reflecting  the  principles  set forth  elsewhere  in this
document.  However,  in those instances (1) where the common shares of an issuer
are held by a parent  company  and (2)  where,  because  of that,  the  election
outcome is not in doubt, F&C does not intend to vote such proxies since the time
and costs would outweigh the benefits.

ACTUAL AND APPARENT CONFLICTS OF INTEREST

Potential  conflicts  of interest  between F&C and F&C's  clients may arise when
F&C's  relationships  with an issuer or with a related  third party  conflict or
appear to conflict with the best interests of F&C's clients.

F&C will indicate in its voting  records  available to clients  whether or not a
material conflict exists or appears to exist. In addition,  F&C will communicate
with the client (which means the independent  Directors or Director(s)  they may
so designate  in the case of the U.S.  Funds and the  investment  adviser in the
case of the Canadian  Funds) in instances  when a material  conflict of interest
may be  apparent.  F&C must  describe the conflict to the client and state F&C's
voting  recommendation and the basis therefor.  If the client considers there to
be a reasonable basis for the proposed vote  notwithstanding the conflict or, in
the case of the Funds, that the  recommendation was not affected by the conflict
(without  considering  the merits of the proposal),  F&C will vote in accordance
with the recommendation it had made to the client.

In all such  instances,  F&C will keep reasonable  documentation  supporting its
voting decisions and/or recommendations to clients.

AMENDMENT OF THE POLICIES AND PROCEDURES

These policies and procedures may be modified at any time by action of the Board
of  Directors  of F&C but will  not  become  effective,  in the case of the U.S.
Funds, unless they are approved by majority vote of the non-interested directors
of the U.S. Funds. Any such  modifications will be sent to F&C's clients by mail
and/or other electronic means in a timely manner. These policies and procedures,
and any amendments  hereto,  will be posted on the U.S. Funds' websites and will
be disclosed in reports to shareholders as required by law.

ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not yet applicable.

ITEM 9.  PURCHASES OF EQUITY  SECURITIES  BY  CLOSED-END  MANAGEMENT  INVESTMENT
COMPANY AND AFFILIATED PURCHASERS.

Not applicable.




ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

There have been no material  changes to the procedures by which the shareholders
may  recommend  nominees to the  registrant's  board of  directors,  where those
changes were  implemented  after the  registrant  last  provided  disclosure  in
response to the  requirements  of Item  7(d)(2)(ii)(G)  of Schedule  14A (17 CFR
240.14a-101), or this Item.

ITEM 11. CONTROLS AND PROCEDURES.

     (a) The registrant's  principal executive and principal financial officers,
         or  persons  performing  similar  functions,  have  concluded  that the
         registrant's  disclosure  controls and  procedures  (as defined in Rule
         30a-3(c)  under the  Investment  Company Act of 1940,  as amended  (the
         "1940 Act") (17 CFR 270.30a-3(c)))  are effective,  as of a date within
         90 days of the filing date of the report that  includes the  disclosure
         required by this paragraph, based on their evaluation of these controls
         and  procedures  required by Rule  30a-3(b)  under the 1940 Act (17 CFR
         270.30a-3(b))  and Rules  13a-15(b) or 15d-15(b)  under the  Securities
         Exchange   Act  of  1934,   as  amended   (17  CFR   240.13a-15(b)   or
         240.15d-15(b)).

     (b) There  were  no  changes  in the  registrant's  internal  control  over
         financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17
         CFR 270.30a-3(d))  that occurred during the registrant's  second fiscal
         quarter  of the  period  covered  by this  report  that has  materially
         affected,   or  is  reasonably   likely  to  materially   affect,   the
         registrant's internal control over financial reporting.

ITEM 12. EXHIBITS.

     (a)(1)   Code of ethics, or any amendment thereto, that is the subject of
              disclosure required by Item 2 is attached hereto.

     (a)(2)   Certifications  pursuant  to Rule  30a-2(a)  under the 1940 Act
              and  Section  302 of the  Sarbanes-Oxley  Act of 2002 are
              attached hereto.

     (a)(3)   Not applicable.

     (b)      Certifications  pursuant  to Rule  30a-2(b)  under the 1940 Act
              and  Section  906 of the  Sarbanes-Oxley  Act of 2002 are
              attached hereto.






                                   SIGNATURES

Pursuant to the  requirements  of the  Securities  Exchange  Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

(registrant) FLAHERTY & CRUMRINE PREFERRED INCOME OPPORTUNITY FUND INCORPORATED

By (Signature and Title)* /S/ DONALD F. CRUMRINE
                         -------------------------------------------------------
                         Donald F. Crumrine, Director, Chairman of the Board and
                         Chief Executive Officer
                         (principal executive officer)

Date              JANUARY 27, 2006
    ----------------------------------------------------------------------------


Pursuant to the  requirements  of the  Securities  Exchange  Act of 1934 and the
Investment  Company  Act of  1940,  this  report  has been  signed  below by the
following  persons on behalf of the  registrant and in the capacities and on the
dates indicated.

By (Signature and Title)*  /S/ DONALD F. CRUMRINE
                         -------------------------------------------------------
                         Donald F. Crumrine, Director, Chairman of the Board and
                         Chief Executive Officer
                         (principal executive officer)

Date              JANUARY 27, 2006
    ----------------------------------------------------------------------------


By (Signature and Title)*  /S/ R. ERIC CHADWICK
                         -------------------------------------------------------
                         R. Eric Chadwick, Chief Financial Officer, Treasurer
                         and Vice President
                         (principal financial officer)

Date              JANUARY 27, 2006
    ----------------------------------------------------------------------------



* Print the name and title of each signing officer under his or her signature.