News Release

CME Euroyen Contracts to Trade on CME Globex®

Wed Dec 06 2006

CHICAGO, Dec. 6 /PRNewswire-FirstCall/ -- CME, the world's largest and most diverse financial exchange, today announced that it plans to list its CME Euroyen futures and options on futures contracts on the CME Globex electronic trading platform. Beginning on Sunday, February 4, 2007, for trade date of February 5, side-by-side electronic and open outcry trading will be available for the Euroyen TIBOR (Tokyo Interbank Offered Rate) contract. The contract will continue to be eligible through the Mutual Offset System Agreement with the Singapore Exchange (SGX).

"Listing our Euroyen products on CME Globex not only increases product distribution but also creates new trading opportunities on a nearly 24 hour basis to serve customers across multiple time zones," noted Robin Ross, Managing Director, CME Interest Rate Products. "Euroyen futures and options on futures will leverage the same innovative CME Globex functionality that provides unparalleled liquidity for our CME Eurodollar products, such as implied spreads and complex options combinations. Additionally, clients will continue to benefit from cross margining with other interest rate products cleared at CME."

CME interest rate products, the exchange's largest product group, enable financial institutions and other customers worldwide to hedge financial risks associated with interest rate moves. CME interest rate products can be used to manage interest rate risks ranging from a single day to 10 years. CME trades more short-term interest rate futures and options on futures than any other exchange in the world. CME total interest rate volume averaged 2.9 million contracts per day in November, up 20 percent from the same period a year ago. Third quarter volume is up 27 percent compared to the previous year.

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, Allan Schoenberg, +1-312-930-8189, Pamela Plehn,
+1-312-930-3446, , or Investors, John Peschier, +1-312-930-8491,
all of CME

Web site:

Corporate Communications

+1 312 930 3434