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NYSE Group Completes Acquisition Of SIAC from Amex

Date 01/11/2006

NYSE Group, Inc. (NYSE: NYX) today announced the closing of its $40 million agreement with the American Stock Exchange LLC (Amex®) for the NYSE to acquire the Amex’s one-third ownership stake in the Securities Industry Automation Corporation (SIAC) as announced on Oct. 25, 2006. NYSE Group now wholly owns SIAC, including Sector, Inc. and SFTI®.

“NYSE Group is pleased to close this transaction with the American Stock Exchange,” said NYSE Group President and co-COO Jerry Putnam, who is also SIAC Chairman and interim CEO. “For NYSE Group, full ownership of SIAC is consistent with our strategic business goals and greatly enhances our ability to serve our customers and investors worldwide.”