Delaware Court states it has jurisdiction to decide the 'Economic Rights' of CBOT exercise right holders

Creating the Leading Global Financial Exchange

Companies Expect to Complete Historic Combination Within Days

Chicago Mercantile Exchange Holdings Inc. (NYSE/Nasdaq: CME) and CBOT Holdings, Inc. (NYSE: BOT) announced on June 11th that they have received clearance from the U.S. Department of Justice to complete their proposed merger without conditions.

Chicago Mercantile Exchange Holdings Inc. and CBOT Holdings, Inc. to Begin Mailing Joint Proxy Statement/Prospectus for Vote on Proposed Merger

CBOT Holdings, Inc., holding company for the Chicago Board of Trade (CBOT®) (NYSE: BOT), one of the leading global derivatives exchanges, announced on May 21st that it will reduce the number of CBOT Holdings, Inc. Class A shares that clearing and equity members must hold as part of their share holding requirements.

The Chicago Board of Trade will host Indy Race Car Driver Jeff Simmons and his 100 percent fuel-grade ethanol car in a tribute to the "Greening of Racing" and a salute to the IndyCar® for its transition to 100 percent fuel-grade ethanol in 2007.

The Chicago Board of Trade announced that it will launch CBOT mini-sized Ag futures contracts on its e-cbot electronic trading platform on May 14, 2007. The contracts will include mini-sized Corn, mini-sized Soybeans and mini-sized Wheat contracts.

The Chicago Board of Trade, one of the world's leading derivatives exchanges, today announced that average daily volume for the first quarter of 2007 reached a record 3,865,771 contracts, an increase of 24 percent compared with the first quarter of 2006. Total volume for the first quarter was a record 239,677,821 contracts, up 24 percent over the same period last year and 18 percent over the previous quarterly volume record, set in the fourth quarter of 2006.

The Chicago Board of Trade announced that it will launch mini-sized CBOT Ag futures contracts on its e-cbot electronic trading platform. This is the first time these contracts will be available on an electronic platform and they will include mini-sized Corn, mini-sized Soybeans and mini-sized Wheat contracts.

Chicago Mercantile Exchange Holdings Inc. sent a letter to shareholders of Chicago Board Of Trade Holdings communicating the benefits of their merger agreement and discussed their position on why the unsolicited ICE/CBOT proposal is inferior to the existing CME/CBOT merger proposal.

The Chicago Board of Trade has established the following trading schedule in connection with the Good Friday holiday: