NYFIX, Inc. Announces Completion of $75 Million Warburg Pincus Investment

New York - 13 October 2006

NYFIX Inc. (Pink Sheets: NYFX), a leader in technology solutions for the financial marketplace, today announced the completion of its sale of $75 million of convertible preferred stock to leading, global private equity firm Warburg Pincus. The sale was previously announced on September 5, 2006. NYFIX intends to use the net proceeds from the investment, after deducting transaction-related expenses, for general corporate purposes and business development activities.

Upon completion of the sale yesterday, Cary Davis, a Warburg Pincus Managing Director, William H. Janeway, Vice Chairman at Warburg Pincus, and P. Howard Edelstein, CEO of NYFIX, have joined the NYFIX Board of Directors.

Cary Davis joined Warburg Pincus in 1994 and is responsible for investments in the financial technology and software sectors. Mr. Davis joined Warburg Pincus from Dell Computer and before that was a consultant at McKinsey & Co. Mr. Davis is a director of Cassatt, GlobalSpec, Pi Corporation, Secure Computing, TradeCard and Wall Street Systems. He received a B.A. in economics from Yale University and an M.B.A. from Harvard Business School.

William H. Janeway joined Warburg Pincus in 1988. Prior to this he was Executive Vice President and Director at Eberstadt Fleming. Dr. Janeway is a director of BEA Systems, Manugistics, O'Reilly Media, Nuance Communications and Wall Street Systems. He received his doctorate in economics from Cambridge University where he was a Marshall Scholar.

As previously announced, P. Howard Edelstein joined the Company as CEO on September 5, 2006. Before this, Mr. Edelstein served as an entrepreneur-in-residence with Warburg Pincus since last March, and prior to that as President and CEO of Radianz. He also has held senior positions at firms such as Thomson Financial ESG, Dow Jones Telerate and Knight-Ridder.

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