UNITED STATES
                        SECURITIES & EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                 SCHEDULE 13G/A

                    Under the Securities Exchange Act of 1934

                               Tronox Incorporated
                                (Name of Issuer)

                 Class A common stock, $0.01 par value per share
                         (Title of Class of Securities)

                                   897051-10-8

                                 (CUSIP Number)

                                December 31, 2006
             (Date of event which requires filing of this statement)


     Check the appropriate box to designate the rule pursuant to which this
Schedule 13G is filed:
     [ ]  Rule 13d-1(b)
     [X]  Rule 13d-1(c)
     [ ]  Rule 13d-1(d)





----------------
     *The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

     The information required in the remainder of this cover page shall not be
deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act
of 1934 ("Act") or otherwise subject to the liabilities of that section of the
Act but shall be subject to all other provisions of the Act (however, see the
Notes).










                               Page 1 of 11 Pages



CUSIP No.  897051-10-8               13G/A                Pages 2 of 11 Pages


-------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE
            PERSONS

            Highbridge Capital Management, LLC               20-1901985
-------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                               (a)  [X]
                                                               (b)  [ ]
-------------------------------------------------------------------------------
     (3)    SEC USE ONLY
-------------------------------------------------------------------------------
     4)     CITIZENSHIP OR PLACE OF ORGANIZATION

            State of Delaware
-------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ----------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                5,100 shares of Common Stock
OWNED BY       ----------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ----------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                5,100 shares of Common Stock
-------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
             5,100 shares of Common Stock
-------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **
                                                                     [ ]
-------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
            0.03%
-------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
            OO - Limited Liability Company
-------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No.  897051-10-8               13G/A                Pages 3 of 11 Pages


     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

            Highbridge Fixed Income Opportunity Master Fund, L.P.
-------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                               (a)  [X]
                                                               (b)  [ ]
-------------------------------------------------------------------------------
     (3)    SEC USE ONLY
-------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            Cayman Islands, British West Indies
-------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ----------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                3,570 shares of Common Stock
OWNED BY       ----------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ----------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                3,570 shares of Common Stock
-------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
             3,570 shares of Common Stock
-------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **
                                                                     [ ]
-------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
            0.02%
-------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
            PN
-------------------------------------------------------------------------------

                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!



CUSIP No.  897051-10-8               13G/A                Pages 4 of 11 Pages


     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

            Highbridge Fixed Income Opportunity Institutional Fund, Ltd.
-------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                               (a)  [X]
                                                               (b)  [ ]
-------------------------------------------------------------------------------
     (3)    SEC USE ONLY
-------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            Cayman Islands, British West Indies
-------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ----------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                1,530 shares of Common Stock
OWNED BY       ----------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ----------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                1,530 shares of Common Stock
-------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
             1,530 shares of Common Stock
-------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **
                                                                     [ ]
-------------------------------------------------------------------------------
     (11)    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
             0.01%
-------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
            CO
-------------------------------------------------------------------------------

                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!


CUSIP No.  897051-10-8               13G/A                Pages 5 of 11 Pages


-------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

            Glenn Dubin
-------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                               (a)  [X]
                                                               (b)  [ ]
-------------------------------------------------------------------------------
     (3)    SEC USE ONLY
-------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            United States
-------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ----------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                5,100 shares of Common Stock
OWNED BY       ----------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ----------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                5,100 shares of Common Stock
-------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
             5,100 shares of Common Stock
-------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **
                                                                     [ ]
-------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
            0.03%
-------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
            IN
-------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!



CUSIP No.  897051-10-8               13G/A                Pages 6 of 11 Pages


-------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

            Henry Swieca
-------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                               (a)  [X]
                                                               (b)  [ ]
-------------------------------------------------------------------------------
     (3)    SEC USE ONLY
-------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            United States
-------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ----------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                5,100 shares of Common Stock
OWNED BY       ----------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ----------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                5,100 shares of Common Stock
-------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
             5,100 shares of Common Stock
-------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **
                                                                     [ ]
-------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
            0.03%
-------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
            IN
-------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!



CUSIP No.  897051-10-8               13G/A                Pages 7 of 11 Pages


      This Amendment No. 1 (this "Amendment") amends the report on Schedule 13G
(the "Schedule 13G") filed by the Highbridge International LLC on December 2,
2005 relating to Class A common stock, $0.01 par value (the "Common Stock") of
Tronox Incorporated (the "Company"). Capitalized terms used herein but not
otherwise defined have the meanings set forth in the Schedule 13G. This
amendment amends and restates items 2(a), 2(b), 2(c), 4, 5 and 8 in there
entirety as set forth below.

Item 2(a).  Name of Person Filing
Item 2(b).  Address of Principal Business Office
Item 2(c).  Citizenship

        Highbridge Fixed Income Opportunity Master Fund, L.P.
        c/o Highbridge Capital Management, LLC
        9 West 57th Street, 27th Floor
        New York, New York  10019
        Citizenship:  Cayman Islands, British West Indies

        Highbridge Fixed Income Opportunity Institutional Fund, Ltd.
        c/o Highbridge Capital Management, LLC
        9 West 57th Street, 27th Floor
        New York, New York  10019
        Citizenship:  Cayman Islands, British West Indies

        Highbridge Capital Management, LLC
        9 West 57th Street, 27th Floor
        New York, New York  10019
        Citizenship:  State of Delaware

        Glenn Dubin
        c/o Highbridge Capital Management, LLC
        9 West 57th Street, 27th Floor
        New York, New York 10019
        Citizenship:  United States

        Henry Swieca
        c/o Highbridge Capital Management, LLC
        9 West 57th Street, 27th Floor
        New York, New York 10019
        Citizenship:  United States


Item 4.   Ownership

        Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.

        (a)     Amount beneficially owned:

                As of the date of this filing, (i) Highbridge Fixed Income
Opportunity Master Fund, L.P. owns 3,570 shares of Common Stock, (ii) Highbridge
Fixed Income Opportunity Institutional Fund, Ltd. owns 1,530 shares of Common
Stock and (iii) each of Highbridge Capital Management LLC, Glenn Dubin and Henry
Swieca may be deemed the beneficial owner of the 5,100 shares of Common Stock


CUSIP No.  897051-10-8               13G/A                Pages 8 of 11 Pages


owned by Highbridge Fixed Income Opportunity Master Fund, L.P. and Highbridge
Fixed Income Opportunity Institutional Fund, Ltd.

               Highbridge Capital Management, LLC is the trading manager of
Highbridge Fixed Income Opportunity Master Fund, L.P. and Highbridge Fixed
Income Opportunity Institutional Fund, Ltd. Glenn Dubin is a Co-Chief Executive
Officer of Highbridge Capital Management, LLC. Henry Swieca is a Co-Chief
Executive Officer of Highbridge Capital Management, LLC. The foregoing should
not be construed in and of itself as an admission by any Reporting Person as to
beneficial ownership of shares of Common Stock owned by another Reporting
Person. In addition, each of Highbridge Capital Management, LLC, Glenn Dubin and
Henry Swieca disclaims beneficial ownership of shares of Common Stock owned by
Highbridge Fixed Income Opportunity Master Fund, L.P. and Highbridge Fixed
Income Opportunity Institutional Fund, Ltd.


        (b)     Percent of class:

                The Company's Quarterly Report on Form 10-Q that was filed on
November 14, 2006, indicates there were 18,356,778 shares of Common Stock
outstanding as of October 31, 2006. Therefore, based on the Company's
outstanding shares of Common Stock (i) Highbridge Fixed Income Opportunity
Master Fund, L.P. may be deemed to beneficially own 0.02% of the outstanding
shares of Common Stock of the Company, (ii) Highbridge Fixed Income Opportunity
Institutional Fund, Ltd. may be deemed to beneficially own 0.01% of the
outstanding shares of Common Stock of the Company and (iii) each of Highbridge
Capital Management, LLC, Glenn Dubin and Henry Swieca may be deemed to
beneficially own 0.03% of the outstanding shares of Common Stock of the Company.
The foregoing should not be construed in and of itself as an admission by any
Reporting Person as to beneficial ownership of shares of Common Stock owned by
another Reporting Person.

        (c)     Number of shares as to which such person has:

                (i)   Sole power to vote or to direct the vote

                      0

                (ii)  Shared power to vote or to direct the vote

                      See Item 4(a)

                (iii) Sole power to dispose or to direct the disposition of

                      0

                (iv)  Shared power to dispose or to direct the disposition of

                      See Item 4(a)

Item 5.  Ownership of Five Percent or Less of a Class

        If this statement is being filed to report the fact that as of the date
hereof the reporting person has ceased to be the beneficial owner of more than
five percent of the class of securities, check the following [x].


CUSIP No.  897051-10-8               13G/A                Pages 9 of 11 Pages


Item 8.  Identification and Classification of Members of the Group

      See Exhibit I.


Exhibits:

Exhibit I: Joint Filing Agreement, dated as of February 14, 2007, by and among
Highbridge Fixed Income Opportunity Master Fund, L.P., Highbridge Fixed Income
Opportunity Institutional Fund, Ltd., Highbridge Capital Management, LLC, Glenn
Dubin and Henry Swieca.


CUSIP No.  897051-10-8               13G/A                Pages 10 of 11 Pages


SIGNATURES

        After reasonable inquiry and to the best of its knowledge and belief,
each of the undersigned certifies that the information with respect to it set
forth in this statement is true, complete, and correct.

Dated: February 14, 2007

HIGHBRIDGE FIXED INCOME                  HIGHBRIDGE FIXED INCOME
OPPORTUNITY MASTER FUND, L.P.            OPPORTUNITY INSTITUTIONAL FUND, LTD.

By: Highbridge Capital Management, LLC   By: Highbridge Capital Management, LLC
    its trading manager                      its trading manager

By: By: /s/ Carolyn Rubin                By: By: /s/ Carolyn Rubin
    -------------------------------          ----------------------------------
Name: Carolyn Rubin                      Name: Carolyn Rubin
Title: Managing Director                 Title: Managing Director


HIGHBRIDGE CAPITAL MANAGEMENT, LLC


                                         /s/ Glenn Dubin
                                         --------------------------------------
                                         GLENN DUBIN
By: /s/ Carolyn Rubin
    -------------------------------
Name: Carolyn Rubin
Title: Managing Director




/s/ Henry Swieca
    ------------------------------
HENRY SWIECA



CUSIP No.  897051-10-8               13G/A                Pages 11 of 11 Pages


                                    EXHIBIT I

                             JOINT FILING AGREEMENT

This will confirm the agreement by and among the undersigned that the Schedule
13G filed with the Securities and Exchange Commission on or about the date
hereof with respect to the beneficial ownership by the undersigned of the Common
Stock, $0.01 par value, of Tronox Incorporated, a Delaware corporation, is being
filed, and all amendments thereto will be filed, on behalf of each of the
persons and entities named below in accordance with Rule 13d-1(k) under the
Securities Exchange Act of 1934, as amended. This Agreement may be executed in
two or more counterparts, each of which shall be deemed an original, but all of
which together shall constitute one and the same instrument.

Dated as of February 14, 2007

HIGHBRIDGE FIXED INCOME                  HIGHBRIDGE FIXED INCOME
OPPORTUNITY MASTER FUND, L.P.            OPPORTUNITY INSTITUTIONAL FUND, LTD.

By: Highbridge Capital Management, LLC   By: Highbridge Capital Management, LLC
    its trading manager                      its trading manager

By: By: /s/ Carolyn Rubin                By: By: /s/ Carolyn Rubin
    ---------------------------------        -----------------------------------
Name: Carolyn Rubin                      Name: Carolyn Rubin
Title: Managing Director                 Title: Managing Director


HIGHBRIDGE CAPITAL MANAGEMENT, LLC


                                         /s/ Glenn Dubin
                                         --------------------------------------
                                         GLENN DUBIN
By: /s/ Carolyn Rubin
    --------------------------------
Name: Carolyn Rubin
Title: Managing Director




/s/ Henry Swieca
------------------------------------
HENRY SWIECA