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Chicago Mercantile Exchange Holdings Inc. Announces Date Of First-Quarter 2007 Earnings Release, Conference Call

Date 02/04/2007

Chicago Mercantile Exchange Holdings Inc. (NYSE, Nasdaq: CME) will announce earnings for the first quarter of 2007 before the financial markets open on Tuesday, April 24, 2007. The company has scheduled an investor conference call that day at 8:30 a.m. Eastern time (7:30 a.m. Central time).