News Release

Chicago Mercantile Exchange Holdings Inc. Announces Date of Fourth-Quarter and Full-Year 2005 Earnings Release, Conference Call

Tue Jan 03 2006

CHICAGO, Jan. 3 /PRNewswire-FirstCall/ -- Chicago Mercantile Exchange Holdings Inc. (NYSE: CME)(NASDAQ: CME) will announce earnings for the fourth quarter and full year of 2005 before the financial markets open on Tuesday, January 31, 2006. 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.cme.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 (800) 946-0719 if calling from within the United States or (719) 457-2645 if calling from outside the United States, at least 10 minutes before the call begins.

Chicago Mercantile Exchange Holdings Inc. became the first publicly traded U.S. financial exchange on Dec. 6, 2002. The company was added to the Russell 1000® Index on July 1, 2003. It is the parent company of Chicago Mercantile Exchange Inc. ( http://www.cme.com/ ), the largest futures exchange in the United States. As an international marketplace, CME brings together buyers and sellers on its CME Globex electronic trading platform and on its trading floors. CME offers futures and options on futures primarily in interest rates, equities, foreign exchange and commodities. The exchange moved about $1.4 billion per day in settlement payments in the first three quarters of 2005 and managed $43.8 billion in collateral deposits at September 30, 2005, including $3.8 billion in deposits for non-CME products.

Further information about Chicago Mercantile Exchange Holdings Inc. and Chicago Mercantile Exchange Inc. is available on the CME Web site at http://www.cme.com/ .

CME-G

SOURCE: CME

CONTACT: Media, Anita S. Liskey, +1-312-466-4613, or Bill Parke,
+1-312-930-3467, news@cme.com , or Investors, John Peschier, +1-312-930-8491,
all of CME

Web site: http://www.cme.com/

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