News Release

CME to Offer Connectivity for Colocated Electronic Trading

Tue Oct 03 2006

CHICAGO, Oct. 3 /PRNewswire-FirstCall/ -- CME, the world's largest and most diverse financial exchange, announced today that it will begin offering customer firms the opportunity to connect their colocated trading servers to the CME over high-speed fiber optic connections in the fourth quarter of 2006. These redundant server connections are expected to decrease network latency times for order entry to CME Globex® to less than one millisecond. The new connection option is called CME Local Network (CME LNet).

"By offering this colocation alternative in response to customers' requests, CME continues its legacy of offering the most innovative technology solutions available. Speed and reliability are two of the most critical components of electronic trading in our business and our technology investments continue to focus on these core components," said CME Managing Director of Products and Services Rick Redding. "We offer electronic trading access to every major asset class. Customers around the globe who are trading electronically depend on the reliability of our platform and access to our products virtually around the clock."

The CME's selection of Equinix Inc. ( ), a leading provider of network-neutral data centers and Internet exchange services, and Digital Realty Trust Inc. ( ), a leading owner and manager of corporate data centers and Internet gateways, will enable customers to directly connect to CME Globex through high performance, high availability fiber links.

For more information, please go to .

CME ( ) is the world's largest and most diverse financial exchange. As an international marketplace, CME brings together buyers and sellers on the CME Globex® electronic trading platform and on its trading floors. CME offers futures and options on futures in these product areas: interest rates, stock indexes, foreign exchange, agricultural commodities, energy, and alternative investment products such as weather, real estate and economic derivatives. CME is a wholly-owned subsidiary of Chicago Mercantile Exchange Holdings Inc. (NYSE: CME)(NASDAQ: CME), which is part of the Russell 1000® Index and the S&P 500® Index.

Statements in this news release that are not historical facts are forward- looking statements. These statements are not guarantees of future performance and involve risks, uncertainties and assumptions that are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or implied in any forward-looking statements. More detailed information about factors that may affect our performance may be found in our filings with the Securities and Exchange Commission, including our most recent Quarterly Report on Form 10-Q, which can be obtained at its Web site at . We undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise.

Chicago Mercantile Exchange, CME, the globe logo, CME Globex and E-mini are trademarks of Chicago Mercantile Exchange Inc. CLEARING 21 is a registered trademark of CME and New York Mercantile Exchange, Inc. S&P, S&P 500, NASDAQ-100, Nikkei 225, Russell 1000, Russell 2000, TRAKRS, Total Return Asset Contracts and other trade names, service marks, trademarks and registered trademarks that are not proprietary to Chicago Mercantile Exchange Inc. are the property of their respective owners, and are used herein under license. Further information about CME and its products is available on the CME Web site at .



CONTACT: Media Contacts, Allan Schoenberg, +1-312-930-8189, Mary
Haffenberg, +1-312-930-3435, or ; or Investor Contact, John
Peschier, +1-312-930-8491, all of CME

Web site:

Corporate Communications

+1 312 930 3434