News Release

CME Announces Revised Independence Day Holiday Hours for Electronically Traded Commodities

Fri Jun 29 2007

CHICAGO, June 29 /PRNewswire-FirstCall/ -- CME has announced the following revised trading schedule in conjunction with the Independence Day holiday (all times are Central time). Please note: the only revision is to CME Commodities traded on CME Globex®:

  Tuesday, July 3   Unless noted below all products close at their regular
                    trading time on the Exchange trading floor and CME
                    Globex.

                    Commodity futures, foreign exchange (FX), interest rate,
                    housing options, GSCI® and weather option products
                    traded on Exchange trading floors close at 12:00 noon
                    (commodity options close at 12:02 p.m.).  Equity index
                    products close at 12:15 p.m. on the trading floor.

                    Weather, GSCI and GSCI Excess Return traded on CME
                    Globex will close at 12:00 noon.  Equity Index products
                    close at 12:15 p.m. on CME Globex.  Commodities,
                    fertilizer and ethanol traded on CME Globex will close
                    at 4:00 p.m.

                    CME Globex regular open for all products, for a trade
                    date of Thursday, July 5, except for commodities,
                    weather, GSCI, GSCI Excess Return, fertilizer, ethanol,
                    TRAKRS and ETFs, which do not open for trading.

  Wednesday,        Exchange trading floors are closed.
  July 4
                    Equity index products traded on CME Globex observe a
                    10:30 a.m. to 5:00 p.m. trading halt. Interest rate, FX
                    and housing products traded on CME Globex observe a
                    12:00 noon to 5:00 p.m. trading halt.

                    CME Globex opens at its regular time of 5:00 p.m.

  Thursday, July 5  Regular trading sessions for CME Globex and Exchange
                    trading floors.

For more details, CME Regular Trading Hours (RTH) and CME Globex holiday schedules can be viewed at http://www.cme.com/trading/res/cch/holiday_calendar3513.html.

CME (http://www.cme.com/) is the world's largest and most diverse derivatives 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.

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 http://www.cme.com/.

CME-G

SOURCE: Chicago Mercantile Exchange

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