NYFIX TradeScope Selected by Susquehanna International Group

August 25, 2005, New York: NYFIX, Inc (NASDAQ: NYFXE), worldwide provider of electronic trade infrastructure, today announced that the Susquehanna International Group, Inc. has selected the TradeScope™ platform to monitor their Appia® FIX engines. The Susquehanna International Group is a leading institutional sales, research and market making firm providing liquidity and best execution in global financial markets.

David Lenowitz, Chief Information Officer for the Susquehanna International Group, said, "We chose the Appia FIX engine because it was the best solution for our needs. When it came time to expand our monitoring and alerting capabilities, we easily decided to go with TradeScope, a platform that is robust, feature rich and gives us the ability to monitor and manage our FIX infrastructure. We were also attracted to NYFIX’ proprietary global support presence and its commitment to be there if we need it."

Mr. Lenowitz and his team feel that TradeScope has and will continue to enhance the monitoring and alerting of their FIX infrastructure, enabling them to concentrate their efforts and resources on other areas of their trading infrastructure.

Robert Rooks, Director of Sales for NYFIX Global FIX Technology, says of the partnership with the Susquehanna International Group, "We are confident that Susquehanna’s selection of both APPIA and now TradeScope will enhance their ability to develop, manage and monitor their global FIX connectivity. As market leaders, both Susquehanna and NYFIX are continuing to form an ever closer global relationship that relies upon the ability of NYFIX to develop its products, applications and global support infrastructure and stay ahead of the curve. Susquehanna has joined an APPIA and TradeScope user base that is increasing globally and relies on NYFIX to provide local, regional and global support through our wholly-owned support centers in Asia, Europe and the US."

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