Chicago Mercantile Exchange Holdings Inc. To Be Added To Russell 1000<SUP><SMALL>®</SUP></SMALL> And Russell 3000<SUP><SMALL>®</SUP></SMALL> Stock Indexes

Frank Russell Company has announced a preliminary list of companies that it expects to add to its 21 U.S. equity indexes, which are widely used by portfolio managers as benchmarks for investment programs. Based on its current market capitalization of approximately $2.0 billion, Chicago Mercantile Exchange Holdings Inc. will join the Russell 1000^® and Russell 3000^® stock indexes when Russell completes its annual index reconstitution process on July 1.