SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

                                    FORM 8-K

                                 CURRENT REPORT
                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934


          Date of Report (Date of earliest event reported): July 2, 2003
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                                   NYFIX, INC.
             (Exact name of registrant as specified in its charter)


New York                              0-21324                    06-1344888
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(State or other jurisdiction          (Commission             (IRS Employer
of incorporation)                     File Number)           Identification No.)


                 333 Ludlow Street, Stamford, Connecticut 06902
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                    (Address of principal executive offices)


Registrant's   telephone   number, including area code: 203-425-8000
                                                        ------------------------

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         (Former name or former address, if changed since last report.)






Item 5.     Other Events and Regulation FD Disclosure.
            -----------------------------------------

            On July 2,  2003,  NYFIX,  Inc.  (the  "Company")  announced  it had
entered  into a  binding  agreement  to  acquire  100%  of  Renaissance  Trading
Technologies LLC. The text of a press release issued by the Company is furnished
as Exhibit 99.1 and is incorporated herein by reference.

Item 7.     Financial Statements and Exhibits.
            ---------------------------------

(c)         Exhibits

            Exhibit No.         Exhibits
            -----------         --------

            99.1                Press release of NYFIX, Inc. dated July 2, 2003.






                                    SIGNATURE

            Pursuant to the requirements of the Securities Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                                NYFIX, INC.



                                                By:/s/ Mark R. Hahn
                                                   -----------------------------
                                                      Mark R. Hahn
                                                      Chief Financial Officer

July 3, 2003


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