================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                  SCHEDULE 13D
                                 (Rule 13d-101)
                    Under the Securities Exchange Act of 1934

                                (Amendment No. 4)
 
                    INTERNATIONAL ASSETS HOLDING CORPORATION
--------------------------------------------------------------------------------
                                (Name of Issuer)


                          COMMON STOCK, $0.01 PAR VALUE
--------------------------------------------------------------------------------
                         (Title of class of securities)


                                   459028 10 6
--------------------------------------------------------------------------------
                                 (CUSIP number)


                                JOSEPH A. ORLANDO
                   VICE PRESIDENT AND CHIEF FINANCIAL OFFICER
                          LEUCADIA NATIONAL CORPORATION
                              315 PARK AVENUE SOUTH
                            NEW YORK, NEW YORK 10010

                                 WITH A COPY TO:

                            ANDREA A. BERNSTEIN, ESQ.
                           WEIL, GOTSHAL & MANGES LLP
                                767 FIFTH AVENUE
                            NEW YORK, NEW YORK 10153
--------------------------------------------------------------------------------
       (Name, address and telephone number of person authorized to receive
                           notices and communications)


                                 MARCH 17, 2005
--------------------------------------------------------------------------------
             (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 which 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
[_].

Note: Schedules filed in paper format shall include a signed original and five
copies of the Schedule, including all exhibits. The information required on the
remainder of this cover page shall not be deemed to be "filed" for the purposes
of Section 18 of the Securities Exchange Act of 1934 (the "Exchange Act") or
otherwise subject to the liabilities of that section of the Exchange Act but
shall be subject to all other provisions of the Exchange Act.

                         (Continued on following pages)
                               (Page 1 of 5 pages)

================================================================================





-------------------------------------------------------------------------                -----------------------------------------
CUSIP No.  459028 10 6                                                          13D
-------------------------------------------------------------------------                -----------------------------------------
           
------------- --------------------------------------------------------------------------------------------------------------------
 1            NAME OF REPORTING PERSON:                                   Leucadia National Corporation
              S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON:
------------- --------------------------------------------------------------------------------------------------------------------
 2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:                                                           (a) [_]
                                                                                                                          (b) [_]
------------- --------------------------------------------------------------------------------------------------------------------
 3            SEC USE ONLY

------------- --------------------------------------------------------------------------------------------------------------------
 4            SOURCE OF FUNDS:                      WC

------------- --------------------------------------------------------------------------------------------------------------------
 5            CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e):                         [_]
------------- --------------------------------------------------------------------------------------------------------------------
 6            CITIZENSHIP OR PLACE OF ORGANIZATION:                       New York

------------- --------------------------------------------------------------------------------------------------------------------
   NUMBER OF                  7     SOLE VOTING POWER:                                   1,309,985
     SHARES
                           -------- ----------------------------------------------------------------------------------------------
  BENEFICIALLY                8     SHARED VOTING POWER:                                 -0-
    OWNED BY
                           -------- ----------------------------------------------------------------------------------------------
      EACH                    9     SOLE DISPOSITIVE POWER:                              1,309,985
   REPORTING
                           -------- ----------------------------------------------------------------------------------------------
  PERSON WITH                10     SHARED DISPOSITIVE POWER:                            -0-

------------- --------------------------------------------------------------------------------------------------------------------
11            AGGREGATE AMOUNT BENEFICIALLY OWNED BY REPORTING PERSON:                   1,309,985

------------- --------------------------------------------------------------------------------------------------------------------
12            CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES:                                          [_]

------------- --------------------------------------------------------------------------------------------------------------------
13            PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):  17.9%

------------- --------------------------------------------------------------------------------------------------------------------
14            TYPE OF REPORTING PERSON:                                   CO

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





                                       2

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

           This Statement constitutes Amendment No. 4 to the Statement on
Schedule 13D (the "Schedule 13D") filed by Leucadia National Corporation
("Leucadia") relating to the common stock, $0.01 par value per share (the
"Common Stock"), of International Assets Holding Corporation, a Delaware
corporation (the "Issuer"). The address of the principal executive office of the
Issuer is 220 East Central Parkway, Suite 2060, Altamonte Springs, Florida
32701. Unless otherwise indicated, all capitalized terms used herein have the
meaning ascribed to them in the Schedule 13D.

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

           As previously disclosed in Amendment No. 3 to the Statement on
Schedule 13D Leucadia agreed to acquire shares of Common Stock in two tranches.
The first tranche of 83,320 shares closed on January 7, 2005 and the second
tranche of 30,000 shares closed on March 17, 2005. Leucadia acquired the shares
of Common Stock using its working capital.

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

           (a) As of March 17, 2005, Leucadia beneficially owned 1,309,985
shares of Common Stock, representing approximately 17.9% of the outstanding
shares of Common Stock based on the 7,272,319 shares of Common Stock outstanding
as of February 11, 2005, as reported by the Issuer in its Quarterly Report on
Form 10-QSB for the quarterly period ended December 31, 2004, plus 30,000 shares
of Common Stock issued upon the exercise of options to purchase Common Stock in
connection with the transactions described in Item 3 of this Amendment No. 4.

           By virtue of their ownership of Leucadia common shares and their
positions as Chairman of the Board, and President and a director, respectively,
of Leucadia, for purposes of this Schedule 13D, Mr. Cumming and Mr. Steinberg
may be deemed to share voting and dispositive powers with respect to the shares
of Common Stock beneficially owned by Leucadia and therefore may be deemed to be
beneficial owners of all of the shares of Common Stock beneficially owned by
Leucadia.

           Except as set forth in this Item 5(a), to the best knowledge of
Leucadia, none of the other persons identified pursuant to Item 2 of the
Schedule 13D beneficially owns any shares of Common Stock.

           (b) Item 5(a) is incorporated herein by reference.

           (c) Except as otherwise described herein, none of the persons
identified pursuant to Item 2 of the Schedule 13D has effected any transactions
in Common Stock during the past sixty days.

           (d) Not applicable.

           (e) Not applicable.


                                       3

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

           The information set forth in Item 3 of this Schedule 13D is
incorporated herein by reference.


























                                       4

                                    SIGNATURE


           After reasonable inquiry and to the best of my knowledge and belief,
I certify that the information set forth in this statement is true, complete and
correct.


           Dated: March 22, 2005



                                          LEUCADIA NATIONAL CORPORATION

                                          By: /s/ Joseph A. Orlando
                                              --------------------------------
                                              Name: Joseph A. Orlando
                                              Title: Vice President




























                                       5