(Check One):

o Form 10-K

o Form 20-F

o Form 11-K

x Form 10-Q o Form 10-D

Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

	(a) The reasons described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense;
x	(b) The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q, or subject distribution report on Form 10-D or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and
	(c) The accountant’s statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.

State below in reasonable detail why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-SAR, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.

NYFIX, Inc. (the “Company”) was unable to timely file its Quarterly Report on Form 10-Q for the three-month period ended June 30, 2007, which was due August 9, 2007 (the “Q2 2007 Report”), because the Company (1) has only recently completed its Quarterly Reports on Form 10-Q for the interim periods ended March 31, 2006, June 30, 2006 and September 30, 2006 and its Annual Report on Form 10-K for the year ended December 31, 2006, and (2) needs to prepare and file its Quarterly Report on Form 10-Q for the interim period ended March 31, 2007 (the “Q1 2007 Report”), prior to filing the Q2 2007 Report.

Also, as a result of the Company’s need to prepare and file the Q1 2007 Report, the Company will be unable to file the Q2 2007 Report within the five-day extension provided by Rule 12b-25. The Company will file the Q2 2007 Report as soon as practicable following the resolution of the foregoing matters.

(1) Name and telephone number of person to contact in regard to this notification

(2) Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If answer is no, identify reports(s).

The Company has not filed its Quarterly Report on Form 10-Q for the three-month period ended March 31, 2007.

(3) Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?

If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.

The Company is currently unable to estimate with specificity the change, if any, in results of operations from the period ended June 30, 2006 due to the significant amount of preparation remaining as described in Part III above. However, the Company does expect to report losses for the period ended June 30, 2007 when it ultimately reports.

NYFIX, Inc. has caused this notification to be signed on its behalf by the undersigned thereunto duly authorized.