News Release

CME Announces Dr. Martin Luther King, Jr. Holiday Trading Hours

Tue Jan 10 2006

CHICAGO, Jan. 10 /PRNewswire-FirstCall/ -- CME has announced the following trading schedule for the Dr. Martin Luther King Jr. holiday (all times are Central time - ):

  Friday, Jan. 13        Exchange trading floors close at noon for CME
                         Commodity Futures, CME Foreign Exchange, CME
                         Interest Rates, CME GSCI®, and CME Weather
                         Options. CME Commodity Options close at 12:02 p.m.
                         Regular trading floor close for CME Equity Indexes
                         at 3:15 p.m.

                         CME® Globex® Foreign Exchange, Equity Indexes
                         and Interest Rates close at 3:15 p.m.

  Sunday, Jan. 15        CME Globex opens at 5:00 p.m. (for trade date of
                         Tuesday, Jan. 17), excluding:

                          CME GSCI                    TRAKRS
                          CME ETFs                    CME Ethanol
                          CME Weather                 CME Feeder Cattle
                          CME Live Cattle             CME Pork Bellies
                          CME Lean Hogs
                          CME Cash-Settled Butter

  Monday, Jan. 16        Exchange trading floors are closed in observance
                         of Dr. Martin Luther King, Jr. Day.

                         CME Globex Equity Indexes close at 10:30 a.m. CME
                         Foreign Exchange and CME Interest Rates close at
                         12:00 noon.

                         CME Globex Regular Open (for trade date of
                         Tuesday, Jan. 17).

Chicago Mercantile Exchange Inc. ( ) is the world's largest and most diverse financial exchange. As an international marketplace, CME brings together buyers and sellers on CME Globex electronic trading platform and on its trading floors. CME offers futures and options on futures primarily in four product areas: interest rates, stock indexes, 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. CME is a wholly owned subsidiary of Chicago Mercantile Exchange Holdings Inc. (NYSE: CME)(NASDAQ: CME), which is part of the Russell 1000® Index.

Chicago Mercantile Exchange, CME, the globe logo and CME Globex are registered trademarks of Chicago Mercantile Exchange Inc. Further information about CME and its products is available on the CME Web site at .



CONTACT: Media Contacts, Allan L. Schoenberg, +1-312-930-8189, or Pamela
Plehn, +1-312-930-3446, or , or Investor Contact, John Peschier,
+1-312-930-8491, all of CME

Web site:

Corporate Communications

+1 312 930 3434