JOINT FILING AGREEMENTJoint Filing Agreement • October 19th, 2006 • Warburg Pincus Private Equity IX, L.P. • Services-computer integrated systems design
THIS JOINT FILING AGREEMENT is entered into as of October 19, 2006, by and among the parties signatories hereto. The undersigned hereby agree that the Statement on Schedule 13D with respect to the shares of Common Stock, par value $0.001 per share, of NYFIX, Inc., a Delaware corporation, is, and any amendment thereafter signed by each of the undersigned shall be, filed on behalf of each undersigned pursuant to and in accordance with the provisions of 13d-1(k) under the Securities Exchange Act of 1934, as amended.
