As filed with the Securities and Exchange Commission on October 30, 2001


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934



                               Capital Trust, Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)

                 Class A Common Stock, par value $0.01 per share
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    14052H100
--------------------------------------------------------------------------------
                                 (CUSIP Number)

                            Michael L. Zuppone, Esq.
                      Paul, Hastings, Janofsky & Walker LLP
                                 399 Park Avenue
                            New York, New York 10022
                                 (212) 318-6906
--------------------------------------------------------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)


                                 January 7, 2001
            ---------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
|_|.



The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose 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).






                                  SCHEDULE 13D


----------------------                                    ----------------------
CUSIP No. 14052H100                                          Page 2 of 11 Pages
----------------------                                    ----------------------

--------------------------------------------------------------------------------
       NAME OF REPORTING PERSON
1      I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

             GRG Investment Partnership LP

--------------------------------------------------------------------------------
       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (A) |_|
2                                                                        (B) |X|

--------------------------------------------------------------------------------
       SEC USE ONLY
3

--------------------------------------------------------------------------------
       SOURCE OF FUNDS
4
             OO

--------------------------------------------------------------------------------
       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
       ITEMS 2(d) or 2(e)                                                    |_|
5

--------------------------------------------------------------------------------
       CITIZENSHIP OR PLACE OF ORGANIZATION
6

             Delaware

--------------------------------------------------------------------------------
    NUMBER OF
     SHARES     7    SOLE VOTING POWER
  BENEFICIALLY
    OWNED BY             419,423
      EACH
    REPORTING  -----------------------------------------------------------------
     PERSON
      WITH      8    SHARED VOTING POWER

                          0
               -----------------------------------------------------------------

                 9    SOLE DISPOSITIVE POWER

                          419,423

               -----------------------------------------------------------------

                 10   SHARED DISPOSITIVE POWER

                          0

-------------------------------------------------------------------------------

11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

             419,423
--------------------------------------------------------------------------------
       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES |_|
12

--------------------------------------------------------------------------------
       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13           2.2%

--------------------------------------------------------------------------------
       TYPE  OF REPORTING PERSON
14           PN

--------------------------------------------------------------------------------





                                  SCHEDULE 13D


----------------------                                    ----------------------
CUSIP No. 14052H100                                          Page 3 of 11 Pages
----------------------                                    ----------------------

--------------------------------------------------------------------------------
       NAME OF REPORTING PERSON
1      I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

             Gary R. Garrabrant

--------------------------------------------------------------------------------
       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (A) |_|
2                                                                        (B) |X|

--------------------------------------------------------------------------------
       SEC USE ONLY
3

--------------------------------------------------------------------------------
       SOURCE OF FUNDS
4
             OO

--------------------------------------------------------------------------------
       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
       ITEMS 2(d) or 2(e)                                                    |_|
5

--------------------------------------------------------------------------------
       CITIZENSHIP OR PLACE OF ORGANIZATION
6

             United States of America

--------------------------------------------------------------------------------
    NUMBER OF
     SHARES     7    SOLE VOTING POWER
  BENEFICIALLY
    OWNED BY             465,909
      EACH
    REPORTING  -----------------------------------------------------------------
     PERSON
      WITH      8    SHARED VOTING POWER

                          0
               -----------------------------------------------------------------

                 9    SOLE DISPOSITIVE POWER

                          465,909

               -----------------------------------------------------------------

                 10   SHARED DISPOSITIVE POWER

                          0

-------------------------------------------------------------------------------

11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

             465,909
--------------------------------------------------------------------------------
       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES |_|
12

--------------------------------------------------------------------------------
       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13           2.48%

--------------------------------------------------------------------------------
       TYPE  OF REPORTING PERSON
14           IN

--------------------------------------------------------------------------------






----------------------                                    ----------------------
CUSIP No. 14052H100                                          Page 4 of 11 Pages
----------------------                                    ----------------------


Item 1.    Security and Issuer.
           -------------------

        The title of the class of equity securities to which this statement
relates is Class A Common Stock, par value $0.01 per share ("Class A Common
Stock") of Capital Trust, Inc., a Maryland corporation (the "Issuer"). The
principal executive office of the Issuer is located at 410 Park Avenue, 14th
Floor, New York, New York 10022.

Item 2.    Identity and Background.
           -----------------------

        This Schedule 13D is filed by the Reporting Persons (as defined below)
pursuant to Rule 13d-1(k)(2) under the Securities Exchange Act of 1934, as
amended.

           The Reporting Persons are:

               (i)  GRG Investment Partnership LP, a Delaware limited
                    partnership ("Garrabrant-CT"); and

               (ii) Mr. Gary R. Garrabrant ("Garrabrant"), who is the general
                    partner of Garrabrant-CT.

        Garrabrant is the sole general partner of Garrabrant-CT. Garrabrant and
Susan M. Garrabrant are the limited partners of Garrabrant-CT.

        Garrabrant-CT:
        -------------

          (a)  Name: GRG Investment Partnership LP

          (b)  Address of Principal Place of Business and Office: 51 Pembroke
               Drive, Lake Forest, IL 60045

          (c)  Principal Business: To hold investments

          (d)  State of Organization: Delaware

        Garrabrant:
        ----------

          (a)  Name: Gary R. Garrabrant

          (b)  Address: 51 Pembroke Drive, Lake Forest, IL 60045

          (c)  Occupation: Chief Investment Officer, Equity International
               Properties, Ltd.

          (d)  Garrabrant is a United States citizen.

        None of the Reporting Persons, during the past five years, have been
convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors) or has been a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction and as a result of







----------------------                                    ----------------------
CUSIP No. 14052H100                                          Page 5 of 11 Pages
----------------------                                    ----------------------



such proceeding was or is subject to a judgement, decree or final order
enjoining future violations of, prohibiting or mandating activities subject to,
Federal or State securities laws or finding any violation with respect to such
laws.

Item 3.    Source and Amount of Funds or Other Consideration.
           -------------------------------------------------

        Upon consummation of the Separation Transaction (as defined below),
Garrabrant-CT acquired direct beneficial ownership of 419,423 shares of Class A
Common Stock that were previously directly beneficially owned by VFC (as defined
below), a number of shares equal to the number of shares in which Garrabrant
held a pecuniary interest prior to such transaction. Garrabrant-CT acquired its
shares of Class A Common Stock as a capital contribution to such partnership
made by VFC in consideration of VFC's partnership interest in such partnership.
Such partnership interest was subsequently distributed and assigned to
Garrabrant (the sole current general partner admitted into Garrabrant-CT) in
connection with the redemption of such current partners' limited liability
company interests then held in VFC as described in Item 5.

Item 4.    Purpose of Transaction.
           ----------------------

        On March 8, 2000, the Issuer entered into a strategic relationship with
Citigroup Investments Inc., a Delaware corporation ("CIG"), pursuant to which,
among other things, their respective affiliates would co-sponsor, commit to
invest capital in and manage high yield commercial real estate mezzanine
investment opportunity funds ("Mezzanine Funds").

        The strategic relationship is governed by a venture agreement, dated as
of March 8, 2000, as amended, (the "Venture Agreement"), amongst Travelers
Limited Real Estate Mezzanine Investments I, LLC, a Delaware limited liability
company ("Limited REMI I"), Travelers General Real Estate Mezzanine Investments
II, LLC, a Delaware limited liability company ("General REMI II"), Travelers
Limited Real Estate Mezzanine Investments II, LLC, a Delaware limited liability
company ("Limited REMI II" and together with Limited REMI I and General REMI II,
the "CIG Parties"), CT-F1, LLC, a Delaware limited liability company ("CT-F1"),
CT-F2-GP, LLC, a Delaware limited liability company ("CT-F2-GP"), CT-F2-LP, LLC,
a Delaware limited liability company ("CT-F2-LP"), CT Investment Management Co.,
LLC, a Delaware limited liability company ("CTIMCO" and together with CT-F1,
CT-F2-GP and CT-F2-LP, the "CT Parties") and the Issuer. The CIG Parties are
affiliates of CIG and the CT Parties are wholly owned subsidiaries of the
Issuer.

        Pursuant to the Venture Agreement, the Issuer has agreed as soon as
possible to take, and submit to stockholders for approval, the steps necessary
for it to be taxed as a real estate investment trust ("REIT Tax Matters") on
terms mutually satisfactory to the Issuer and the CIG Parties subject to changes
in law, acts of God or force majeure, or good faith inability to meet the
requisite qualifications.

        In connection with the Venture Agreement, Garrabrant and Garrabrant-CT
entered into a stockholder approval agreement with General REMI II (the
"Stockholder Approval Agreement"). Pursuant to the agreement, each Reporting
Person signatory thereto agreed, subject to certain limitations contained
therein in the case of any Reporting Person who is an







----------------------                                    ----------------------
CUSIP No. 14052H100                                          Page 6 of 11 Pages
----------------------                                    ----------------------



officer or director of the Issuer, to vote its shares of Class A Common Stock in
favor of, among other things, any REIT Tax Matter submitted for stockholder
approval. A copy of the Stockholder Approval Agreement is attached hereto as
Exhibit 2 and is incorporated herein by reference.

        On March 8, 2000, pursuant to the Venture Agreement, the Issuer issued a
stock purchase warrant to purchase 4,250,000 shares of Class A Common Stock
which was ultimately transferred to Limited REMI I (the "Limited REMI I
Warrant"). In addition, on April 9, 2001, May 29, 2001 and August 7, 2001,
pursuant to the Venture Agreement, the Issuer issued stock purchase warrants to
purchase, in the aggregate, 4,278,467 shares of Class A Common Stock which were
ultimately transferred to General REMI II (the "General REMI II Warrants" and,
together with the Limited REMI I Warrant, the "Warrants"). The Warrants were
issued in connection with the organization and capitalization of CT Mezzanine
Partners I LLC and CT Mezzanine Partners II LP, the first two Mezzanine Funds
sponsored pursuant to the Venture Agreement.

        The Reporting Persons intend to hold the shares of Class A Common Stock
reported herein for investment purposes, but reserve the right to consider
various alternatives for their investment in the Issuer including pursuing or
advancing:

        (a) the acquisition by any person of additional securities of the Issuer
        or the disposition of securities of the Issuer; (b) an extraordinary
        corporate transaction, such as a merger, reorganization or liquidation,
        involving the Issuer or any of its subsidiaries; (c) a sale or transfer
        of a material amount of assets of the Issuer or any of its subsidiaries;
        (d) any change in the present board of directors or management of the
        Issuer, including any plans or proposals to change the number or term of
        directors or to fill any existing vacancies on the board; (e) any
        material change in the present capitalization or dividend policy of the
        Issuer; (f) any other material change in the Issuer 's business or
        corporate structure; (g) any changes in the Issuer 's charter or by-laws
        or other actions which may impede the acquisition of control of the
        Issuer by any person; (h) causing a class of securities of the Issuer to
        be delisted from a national securities exchange or to cease to be
        authorized to be quoted in an inter-dealer quotation system of a
        registered national securities association; (i) causing a class of
        equity securities of the Issuer to become eligible for termination of
        registration pursuant to Section 12(g)(4) of the Act; or (j) any action
        similar to those enumerated above.

        Except as described in this Item 4, none of the Reporting Persons has
formulated any plans or proposals which relate to or would result in any of the
foregoing actions. The Reporting Persons' determination with respect to the
foregoing actions will depend upon various factors, including, but not limited
to, the Reporting Persons' evaluation of the Issuer and its prospects, general
market and economic conditions (including conditions affecting the capital
market and real estate market in general), other opportunities available to the
Reporting Persons and other factors the Reporting Persons may deem relevant to
their investment decision.







----------------------                                    ----------------------
CUSIP No. 14052H100                                          Page 7 of 11 Pages
----------------------                                    ----------------------



Item 5.    Interest in Securities of the Issuer.
           ------------------------------------

        (a) and (b) The aggregate percentage of shares of Class A Common Stock
reported beneficially owned by the Reporting Persons as of the date of filing of
this Schedule 13D is based upon 18,727,731 shares of Class A Common Stock issued
and outstanding as reported in the Issuer's report on Form 10-Q for the fiscal
year ended on June 30, 2001, as filed on August 13, 2001.

        Garrabrant-CT holds of record and thereby directly beneficially owns and
has the sole direct power to vote and dispose of 419,423 shares of Class A
Common Stock (the "Garrabrant-CT Shares"). Garrabrant indirectly beneficially
owns and has the indirect power to vote and dispose of the Garrabrant-CT Shares.
Garrabrant beneficially owns and will have the sole power to vote and dispose of
46,486 shares of Class A Common A Stock issuable upon the exercise of options to
purchase and the conversion of stock units to obtain shares of Class A Common
Stock that are, or become within 60 days, vested and exercisable.

        (c)Garrabrant-CT acquired its shares of Class A Common Stock in December
1999 in a series of coordinated transactions (the "Separation Transaction")
pursuant to which beneficial ownership of an aggregate of 1,467,979 of the
9,320,531 shares Class A Common Stock previously directly beneficially owned by
Veqtor Finance Company, L.L.C. ("VFC") was transferred to partnerships (the
"Other Partnerships") controlled by the former limited partners of Capital Trust
Investors Limited Partnership, an Illinois limited partnership and then a
managing member of VFC ("CTILP"). The Other Partnerships include: Garrabrant-CT;
Callahan-CT General Partnership, an Illinois general partnership
("Callahan-CT"); Crocker-CT General Partnership, an Illinois general partnership
("Crocker-CT"); DRD Family Partnership LP, an Illinois limited partnership
("Dammeyer-CT"); and Rosenberg-CT General Partnership, an Illinois general
partnership ("Rosenberg-CT"). Beneficial ownership of an aggregate of 4,660,264
shares of the 9,320,531 shares of Class A Common Stock previously directly
beneficially owned by VFC prior to the Separation Transaction was transferred to
CMH Investment Partnership LP, a Delaware limited partnership ("Hatkoff LP") and
JRK Investment Partnership LP, a Delaware limited partnership ("Klopp LP"). Each
of the Other Partnerships, Hatkoff LP and Klopp LP acquired direct beneficial
ownership of such number of shares of Class A Common Stock equal to the number
of shares in which the persons currently controlling such partnerships held an
indirect pecuniary interest prior to the Separation Transaction. VFC retained
direct beneficial ownership of 3,192,888 shares of Class A Common Stock which
represents the number of shares in which the persons controlling VFC after the
Separation Transaction held an indirect pecuniary interest prior to the
Separation Transaction.

        The Separation Transaction was effected as follows. On December 2, 1999,
CTILP was dissolved whereupon the former partners thereof were distributed their
pro rata share of the common member interests in VFC owned by CTILP. Thereafter,
on December 6, 1999, the former CTILP partners (or their further assignees) were
admitted as members of VFC. After the foregoing dissolution and admission
transactions, the members of VFC included Crocker-CT, V2 Holdings LLC, a
Delaware limited liability company ("V2"), Zell General Partnership, Inc., an







----------------------                                    ----------------------
CUSIP No. 14052H100                                          Page 8 of 11 Pages
----------------------                                    ----------------------



Illinois corporation ("Zell GP"), two affiliates of Zell GP and the persons
currently controlling the Other Partnerships.

        Thereafter, on December 6, 1999, VFC and Craig M. Hatkoff ("Hatkoff")
formed Hatkoff LP and VFC and John R. Klopp ("Klopp") formed Klopp LP. In
connection with such formation transactions, VFC contributed 2,330,132 shares of
Class A Common Stock as a capital contribution to each of Hatkoff LP and Klopp
LP in consideration of VFC's partnership interest in each such partnership. On
December 7, 1999, VFC redeemed the limited liability company interests in VFC
held by Hatkoff, a trust established by Hatkoff for the benefit of Hatkoff's
family, Klopp and a trust established by Klopp for the benefit of Klopp's family
(inasmuch as such persons had succeeded to the limited liability company
interests in VFC held by V2 and had been admitted as members of VFC on December
6, 1999 following the earlier dissolution of V2) in exchange for, in the case of
Hatkoff and his family trust, a distribution of VFC's entire interest in the
previously formed Hatkoff LP (to which a number of shares equal to Hatkoff's
indirect pecuniary interest prior to the Separation Transaction had been
transferred in connection with the foregoing contribution transactions), and in
the case of Klopp and his family trust, a distribution of VFC's interest in the
previously formed Klopp LP (to which a number of shares equal to Klopp's
indirect pecuniary interest prior to the Separation Transaction had been
transferred in connection with the foregoing contribution transactions).

        Thereafter, on December 8, 1999, VFC separately formed the Other
Partnerships with the former limited partners of CTILP. In connection with such
formation transactions, VFC contributed 209,711, 209,711, 209,711 419,423 and
419,423 shares of Class A Common Stock as a capital contribution to Crocker-CT,
Callahan-CT, Dammeyer-CT, Garrabrant-CT and Rosenberg-CT, respectively, in
consideration of VFC's partnership interest in each such partnership.
Thereafter, on December 9, 1999, VFC redeemed the limited liability company
interests in VFC held by the former limited partners of CTILP and their
transferees, as applicable (inasmuch as such persons had succeeded to the
limited liability company interests in VFC held by CTILP and had been admitted
as members of VFC on December 6, 1999 following the earlier dissolution of
CTILP), in exchange for a distribution of VFC's entire interest in each of their
respective Other Partnerships (to which a number of shares equal to their
indirect pecuniary interest prior to the Separation Transaction had been
transferred in connection with the foregoing contribution transactions).

        Upon consummation of the Separation Transaction by means of the
foregoing transactions, Hatkoff LP, Klopp LP, VFC, Crocker-CT, Callahan-CT,
Dammeyer-CT, Garrabrant-CT and Rosenberg-CT acquired (or, in the case of VFC,
retained) direct beneficial ownership of such number of shares of Class A Common
Stock as is set forth opposite its name or identity below:







----------------------                                    ----------------------
CUSIP No. 14052H100                                          Page 9 of 11 Pages
----------------------                                    ----------------------



       -------------------------------------------------------------
       Person                              Shares
       -------------------------------------------------------------

       -------------------------------------------------------------
       Hatkoff LP                           2,330,132
       -------------------------------------------------------------
       Klopp LP                             2,330,132
       -------------------------------------------------------------
       VFC                                  3,192,288
       -------------------------------------------------------------
       Crocker-CT                             209,711
       -------------------------------------------------------------
       Callahan-CT                            209,711
       -------------------------------------------------------------
       Dammeyer-CT                            209,711
       -------------------------------------------------------------
       Garrabrant-CT                          419,423
       -------------------------------------------------------------
       Rosenberg-CT                           419,423
       -------------------------------------------------------------

        As described in Item 4, the Reporting Persons and General REMI II have
entered into a Stockholder Approval Agreement governing the voting of Class A
Common Stock held by the Reporting Persons. General REMI II and certain of its
affiliates, including Limited REMI I, controlling or under common control with
General REMI II reported aggregate beneficial ownership of 8,528,467 shares of
Class A Common Stock issuable upon the exercise of the currently exercisable
Warrants. Such shares represent 31.3% of the outstanding shares of Class A
Common Stock (calculated in accordance with Rule 13d-3(d)(1)). The Reporting
Persons disclaim beneficial ownership of any shares of Class A Common Stock
beneficially owned by General REMI II and its affiliates. General REMI II and
its affiliates have disclaimed beneficial ownership of any shares of Class A
Common Stock held by the Reporting Persons.

        On March 31, 2001, June 30, 2001 and September 30, 2001, pursuant to the
Issuer's incentive stock plan, Garrabrant was granted stock units which are
immediately vested and convertible into 1,709, 1,404 and 1,253 shares of Class A
Common Stock, respectively.


        To the best of knowledge of the Reporting Person, except as described in
Items 3, 4 and 5, none of the Reporting Persons has effected any transactions in
the Class A Common Stock during the period which commenced sixty days prior to
the date of the event which triggered the filing of this Schedule 13D and ends
on the date of the filing of this Schedule 13D.

        (d)No other person has the right to receive or the power to direct the
receipt of dividends from, or the proceeds from the sale of, the shares of Class
A Common Stock reported herein.

        (e)Not applicable

Item 6.    Contracts, Arrangements, Understandings or Relationships With Respect
           to Securities of Issuer.
           ---------------------------------------------------------------------

        Except as set forth in Item 4 of this Schedule 13D, to the best
knowledge of the Reporting Persons, no contracts, arrangements, understandings
or relationships (legal or otherwise) exist among the Reporting Persons and any
other person with respect to the securities of the Issuer.







----------------------                                    ----------------------
CUSIP No. 14052H100                                          Page 10 of 11 Pages
----------------------                                    ----------------------



Item 7.    Materials to be Filed as Exhibits.
           ---------------------------------


        --------------------------------------------------------------------
        Exhibit No.         Description
        --------------------------------------------------------------------
        1.                  Joint Filing Agreement, dated October 30, 2001
        --------------------------------------------------------------------
        2.                  Stockholder Approval Agreement, dated as of
                            March 8, 2000, among Travelers General Real
                            Estate Mezzanine Investments II, LLC, Gary R.
                            Garrabrant and Garrabrant Investment
                            Partnership LP (filed as Exhibit R to the
                            Schedule 13D jointly filed by Citigroup Inc.
                            and other reporting persons identified therein
                            on August 17, 2001 and is incorporated herein
                            by reference).
        --------------------------------------------------------------------







                                    SIGNATURE

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


                                     GRG Investment Partnership LP

                                     By: Gary R. Garrabrant, its general partner

                                          /s/ Gary R. Garrabrant
                                         --------------------------------
                                         Gary R. Garrabrant

                                     /s/ Gary R. Garrabrant
                                     --------------------------------
                                     GARY R. GARRABRANT







                                                                       Exhibit 1

                      CONSENT AND AGREEMENT TO JOINT FILING


        Pursuant to Rule 13d-1(k)(1)(iii) of Regulation 13D-G of the Rules and
Regulations of the Securities and Exchange Commission under the Securities
Exchange Act of 1934, as amended, each of the undersigned persons does hereby
consent to and agree to jointly file with the Securities and Exchange Commission
a Schedule 13D on behalf of each of them with respect to their beneficial
ownership of shares of class A common stock, par value $.01 per share, of
Capital Trust, Inc., a Maryland corporation, and any future amendments thereto
as may be required from time to time.


Dated:  October 30, 2001



                                     GRG Investment Partnership LP

                                     By: Gary R. Garrabrant, its general partner


                                          /s/ Gary R. Garrabrant
                                         --------------------------------
                                         Gary R. Garrabrant

                                     /s/ Gary R. Garrabrant
                                     --------------------------------
                                     GARY R. GARRABRANT