Wolf Haldenstein Announces Investigation into NYFIX, Inc. Proposed Acquisition

Attorney Advertising. The law firm of Wolf Haldenstein Adler Freeman & Herz LLP is investigating possible breaches of fiduciary duty by the Board of Directors of NYFIX, Inc. (“NYFIX”) (NASDAQ:NYFX) arising out of the proposed acquisition of NYFIX by NYSE Euronext.

On Thursday, August 28, 2009, NYSE Euronext announced that it would acquire NYFIX in a transaction valued at approximately $144 million. Wolf Haldenstein is investigating if NYSE Euronext is underpaying for NYFIX, thus unlawfully harming NYFIX shareholders.

Wolf Haldenstein has been representing individual and institutional investors for many years, serving as lead counsel in numerous cases in U.S. federal and state courts. Please visit the Wolf Haldenstein website (http://www.whafh.com) for more information about the firm.

If you own NYFIX common stock and you wish to discuss this matter with us, or have any questions concerning your rights and interests with regard to this matter, please contact:

Gustavo Bruckner, Martin Restituyo, or Derek Behnke

Wolf Haldenstein Adler Freeman & Herz LLP

270 Madison Avenue

New York, New York 10016

Phone Numbers:

(800) 575-0735

(212) 545-4600

Email:

bruckner@whafh.com

Classmember@whafh.com

Website:

http://www.whafh.com