CME Group Inc. Announces Date Of Third-Quarter 2007 Earnings Release, Conference Call

CME Group Inc. (NYSE, Nasdaq: CME) will announce earnings for the third quarter of 2007 before the financial markets open on Wednesday, October 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).

A live audio Webcast of the conference call will be available on the Investor Relations section of the company's Web site, http://www.cmegroup.com. Following the conference call, an archived recording will be available at the same site. Those wishing to listen to the live conference via telephone should dial (888) 215-6825 if calling from within the United States or (913) 312-1390 if calling from outside the United States, at least 10 minutes before the call begins.

CME Group (http://www.cmegroup.com) is the world's largest and most diverse exchange. Formed by the 2007 merger of the Chicago Mercantile Exchange Holdings and CBOT Holdings, CME Group serves the risk management needs of customers around the globe. As an international marketplace, CME Group brings buyers and sellers together on the CME Globex electronic trading platform and on its trading floors. CME Group offers the widest range of benchmark products available across all major asset classes, including futures and options based on interest rates, equity indexes, foreign exchange, agricultural commodities and alternative investment products such as weather and real estate. CME Group's Class A common stock is traded on the New York Stock Exchange and the Nasdaq Global Select Market under the symbol "CME."