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

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: March 31, 2011

Check here if Amendment [  ]; Amendment Number:
This Amendment (Check only one.): [  ] is a restatement.
                                  [  ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:    Labranche & Co Inc.
Address: 33 Whitehall Street
         New York, NY  10004

13F File Number:  028-10499

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:      Jeffrey A. McCutcheon
Title:     Senior Vice President and Chief Financial Officer
Phone:     212-820-6220

Signature, Place, and Date of Signing:

 /s/ Jeffrey A. McCutcheon     New York, NY     April 14, 2011

Report Type (Check only one.):

[ X]         13F HOLDINGS REPORT.

[  ]         13F NOTICE.

[  ]         13F COMBINATION REPORT.



                              FORM 13F SUMMARY PAGE

Report Summary:

Number of Other Included Managers:         2

Form 13F Information Table Entry Total:    83

Form 13F Information Table Value Total:    $161,133 (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional managers with respect to which this report is filed, other
than the manager filing this report.

No.  13F File Number               Name

01   028-10500                     Labranche & Co., LLC
02   028-10501                     LLaBranche Capital LLC



                                    
                                                     FORM 13F INFORMATION TABLE
                                                             VALUE  SHARES/ SH/ PUT/ INVSTMT  OTHER            VOTING AUTHORITY
NAME OF ISSUER                 TITLE OF CLASS   CUSIP     (x$1000)  PRN AMT PRN CALL DSCRETN MANAGERS         SOLE   SHARED     NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
A123 SYS INC                   COM              03739T108      445    70085 SH       DEFINED 02                  0    70085        0
AFLAC INC                      COM              001055102     2497    47312 SH       DEFINED 02                  0    47312        0
ALCON INC                      COM SHS          H01301102      817     4934 SH       DEFINED 02                  0     4934        0
AMERICAN EXPRESS CO            COM              025816109      229     5068 SH       DEFINED 02                  0     5068        0
AMERICAN SUPERCONDUCTOR CORP   COM              030111108      325    13076 SH       DEFINED 02                  0    13076        0
APPLE INC                      COM              037833100     3382     9706 SH       DEFINED 02                  0     9706        0
BEST BUY INC                   COM              086516101      447    15569 SH       DEFINED 02                  0    15569        0
BEST BUY INC                   COM              086516101        8     1000 SH  CALL DEFINED 02                  0     1000        0
BUCYRUS INTL INC NEW           COM              118759109      205     2245 SH       DEFINED 02                  0     2245        0
CBOE HLDGS INC                 COM              12503M108     2656    91664 SH       DEFINED 02                  0    91664        0
CBOE HLDGS INC                 COM              12503M108        7       10 SH  CALL DEFINED 02                  0       10        0
CHEVRON CORP NEW               COM              166764100      329     3066 SH       DEFINED 02                  0     3066        0
CONOCOPHILLIPS                 COM              20825C104      530      800 SH  CALL DEFINED 02                  0      800        0
CONSOL ENERGY INC              COM              20854P109      201     3749 SH       DEFINED 02                  0     3749        0
CURRENCYSHARES EURO TR         EURO SHS         23130C108      229     1619 SH       DEFINED 02                  0     1619        0
CURRENCYSHARES EURO TR         EURO SHS         23130C108       78     1501 SH  CALL DEFINED 02                  0     1501        0
CURRENCYSHS JAPANESE YEN TR    JAPANESE YEN     23130A102     3884    32707 SH       DEFINED 02                  0    32707        0
CURRENCYSHS JAPANESE YEN TR    JAPANESE YEN     23130A102      238     1000 SH  PUT  DEFINED 02                  0     1000        0
DEERE & CO                     COM              244199105      241     2485 SH       DEFINED 02                  0     2485        0
DIREXION SHS ETF TR            DLY FIN BULL NEW 25459W516      212      250 SH  CALL DEFINED 02                  0      250        0
E TRADE FINANCIAL CORP         COM NEW          269246401      625    40010 SH       DEFINED 02                  0    40010        0
EL PASO CORP                   COM              28336L109      242      577 SH  CALL DEFINED 02                  0      577        0
ENERSYS                        COM              29275Y102      271     6826 SH       DEFINED 02                  0     6826        0
FORD MTR CO DEL                COM PAR $0.01    345370860     2701   181183 SH       DEFINED 02                  0   181183        0
FORD MTR CO DEL                COM PAR $0.01    345370860      686     4000 SH  PUT  DEFINED 02                  0     4000        0
GOLDCORP INC NEW               COM              380956409     3329    66839 SH       DEFINED 02                  0    66839        0
HALLIBURTON CO                 COM              406216101      698     1050 SH  CALL DEFINED 02                  0     1050        0
INTREPID POTASH INC            COM              46121Y102      281      750 SH  CALL DEFINED 02                  0      750        0
INTREPID POTASH INC            COM              46121Y102      216      750 SH  PUT  DEFINED 02                  0      750        0
ISHARES INC                    MSCI CHILE INVES 464286640      342     4755 SH       DEFINED 02                  0     4755        0
ISHARES INC                    MSCI HONG KONG   464286871      294    15530 SH       DEFINED 02                  0    15530        0
ISHARES INC                    MSCI STH AFRCA   464286780     1029    14112 SH       DEFINED 02                  0    14112        0
ISHARES SILVER TRUST           ISHARES          46428Q109    14639   397900 SH       DEFINED 02                  0   397900        0
ISHARES TR                     BARCLYS GOVT CR  464288596     2355    21991 SH       DEFINED 02                  0    21991        0
ISHARES TR                     IBOXX INV CPBD   464287242    19163   177110 SH       DEFINED 02                  0   177110        0
ISHARES TR                     MSCI EMERG MKT   464287234     2819    57893 SH       DEFINED 02                  0    57893        0
ISHARES TR                     MSCI EMERG MKT   464287234       28      200 SH  CALL DEFINED 02                  0      200        0
ISHARES TR                     RUSSELL 2000     464287655     2799    33257 SH       DEFINED 02                  0    33257        0
ISHARES TR                     S&P SH NTL AMTFR 464288158     4817    45932 SH       DEFINED 02                  0    45932        0
JOY GLOBAL INC                 COM              481165108      252     2549 SH       DEFINED 02                  0     2549        0
LORILLARD INC                  COM              544147101      275     2894 SH       DEFINED 02                  0     2894        0
MAGIC SOFTWARE ENTERPRISES L   ORD              559166103      340    45000 SH       DEFINED 02                  0    45000        0
MARATHON OIL CORP              COM              565849106      375      196 SH  CALL DEFINED 02                  0      196        0
MARKET VECTORS ETF TR          GOLD MINER ETF   57060U100      230      350 SH  CALL DEFINED 02                  0      350        0
MCCLATCHY CO                   CL A             579489105      595   175000 SH       DEFINED 02                  0   175000        0
MECHEL OAO                     SPONSORED ADR    583840103      251     8162 SH       DEFINED 02                  0     8162        0
MEDTRONIC INC                  COM              585055106     6474   164524 SH       DEFINED 02                  0   164524        0
MONSANTO CO NEW                COM              61166W101      234     3234 SH       DEFINED 02                  0     3234        0
MOSAIC CO                      COM              61945A107      235     2990 SH       DEFINED 02                  0     2990        0
PEABODY ENERGY CORP            COM              704549104      212     2945 SH       DEFINED 02                  0     2945        0
PETROHAWK ENERGY CORP          COM              716495106     2121    86445 SH       DEFINED 02                  0    86445        0
PFIZER INC                     COM              717081103      720    35440 SH       DEFINED 02                  0    35440        0
POTASH CORP SASK INC           COM              73755L107     5597     3750 SH  CALL DEFINED 02                  0     3750        0
POTASH CORP SASK INC           COM              73755L107      482     8173 SH       DEFINED 02                  0     8173        0
POWERSHARES ETF TRUST          LX NANOTCH PTF   73935X633      142    14754 SH       DEFINED 02                  0    14754        0
POWERSHARES GLOBAL ETF TRUST   SOVEREIGN DEBT   73936T573      986    37325 SH       DEFINED 02                  0    37325        0
POWERSHARES INDIA ETF TR       INDIA PORT       73935L100      330    13754 SH       DEFINED 02                  0    13754        0
POWERSHS DB US DOLLAR INDEX    DOLL INDX BULL   73936D107    16024   735385 SH       DEFINED 02                  0   735385        0
POWERSHS DB US DOLLAR INDEX    DOLL INDX BULL   73936D107     2404   101963 SH  CALL DEFINED 02                  0   101963        0
SILICON IMAGE INC              COM              82705T102     1032   115000 SH       DEFINED 02                  0   115000        0
SPDR GOLD TRUST                GOLD SHS         78463V107      470      664 SH  CALL DEFINED 02                  0      664        0
SPDR INDEX SHS FDS             S&P RUSSIA ETF   78463X558     1114    28064 SH       DEFINED 02                  0    28064        0
SPDR S&P 500 ETF TR            TR UNIT          78462F103      293      420 SH  CALL DEFINED 02                  0      420        0
SPDR S&P 500 ETF TR            TR UNIT          78462F103    23314   175929 SH       DEFINED 02                  0   175929        0
SPDR SERIES TRUST              S&P RETAIL ETF   78464A714      402      909 SH  CALL DEFINED 02                  0      909        0
SPDR SERIES TRUST              S&P RETAIL ETF   78464A714      325      798 SH  PUT  DEFINED 02                  0      798        0
TATA MTRS LTD                  SPONSORED ADR    876568502      375     1000 SH  CALL DEFINED 02                  0     1000        0
TATA MTRS LTD                  SPONSORED ADR    876568502      410     1000 SH  PUT  DEFINED 02                  0     1000        0
TRANSOCEAN LTD                 REG SHS          H8817H100      598     1068 SH  CALL DEFINED 02                  0     1068        0
TYSON FOODS INC                CL A             902494103      253    13186 SH       DEFINED 02                  0    13186        0
UNITED STATES OIL FUND LP      UNITS            91232N108      497    11671 SH       DEFINED 02                  0    11671        0
VALE S A                       ADR              91912E105     1331    39907 SH       DEFINED 02                  0    39907        0
VALE S A                       ADR              91912E105      298     1184 SH  PUT  DEFINED 02                  0     1184        0
VANGUARD BD INDEX FD INC       LONG TERM BOND   921937793      351     4483 SH       DEFINED 02                  0     4483        0
VANGUARD INTL EQUITY INDEX F   MSCI EMR MKT ETF 922042858     6547   133824 SH       DEFINED 02                  0   133824        0
VANGUARD INTL EQUITY INDEX F   MSCI EMR MKT ETF 922042858       49      109 SH  CALL DEFINED 02                  0      109        0
VANGUARD WORLD FD              EXTENDED DUR     921910709     1331    16878 SH       DEFINED 02                  0    16878        0
WASTE MGMT INC DEL             COM              94106L109     3958   105992 SH       DEFINED 02                  0   105992        0
WEATHERFORD INTERNATIONAL LT   REG SHS          H27013103     2046     2480 SH  CALL DEFINED 02                  0     2480        0
WELLS FARGO & CO NEW           COM              949746101      247     7794 SH       DEFINED 02                  0     7794        0
WISDOMTREE TR                  EM LCL DEBT FD   97717X867     2820    54323 SH       DEFINED 02                  0    54323        0
WISDOMTREE TRUST               EMG MKTS SMCAP   97717W281      203     3797 SH       DEFINED 02                  0     3797        0
WISDOMTREE TRUST               INDIA ERNGS FD   97717W422      296    11942 SH       DEFINED 02                  0    11942        0