CME's GLOBEX® Electronic Trading Volume Posts New High As E-mini™ S&P 500® Futures Again Surpass One Million Contracts Traded

Trading on the GLOBEX® electronic trading platform of Chicago Mercantile Exchange Inc. (CME) reached a new high yesterday, March 17, with 1,787,028 contracts traded, as E-mini™ S&P 500® futures surpassed the one million mark for the second time with 1,131,924 contracts. Excluding days on which CME employed special opening procedures for its nontraditional TRAKRS^SM products, yesterday marked the highest GLOBEX volume day in CME history.

These records surpass the previous records set on March 13, with 1,592,150 contracts traded on GLOBEX and 1,003,414 E-mini S&P 500 futures contracts traded.

Other records set March 17 include:

Contract	Volume Record	Open Interest Record	Previous Record
NASDAQ-100® futures		114,998 positions	109,198 positions on 9/20/02
E-mini NASDAQ-100 futures	483,850 contracts	375,267 positions	382,611 contracts on 3/13/03 330,848 positions on 3/14/03
E-mini Russell 2000® futures	16,012 contracts	37,231 positions	12,439 contracts on 2/11/03 36,001 positions on 3/12/03
E-mini S&P MidCap 400™ futures		18,470 positions	18,166 positions on 3/14/03

TRAKRS are nontraditional futures contracts developed by CME and Merrill Lynch to allow securities account customers to efficiently track an index of stocks, bonds, currencies or other financial instruments. Because TRAKRS products employ a special opening procedure, they launch with high initial volume.

Chicago Mercantile Exchange Inc. (www.cme.com) is the largest futures exchange in the United States and the second largest exchange in the world for the trading of futures and options on futures. As an international marketplace, CME brings together buyers and sellers on its trading floors and GLOBEX around-the-clock electronic trading platform. CME offers futures and options on futures primarily in four product areas: interest rates, stock indexes, foreign exchange and commodities. The exchange moves an average of about $1.8 billion per day in settlement payments and manages $27.4 billion in collateral deposits. On Dec. 6, 2002, Chicago Mercantile Exchange Holdings Inc. (NYSE: CME) and its CME subsidiary became the first publicly traded U.S. financial exchange.

GLOBEX is a registered trademark of Chicago Mercantile Exchange Inc. E-mini is a service mark of CME. TRAKRS and Total Return Asset Contractssm are service marks of Merrill Lynch & Co., Inc. TRAKRS are patent pending. S&P, S&P 500, S&P MidCap 400, NASDAQ-100, Russell 2000 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 www.cme.com.