Please be advised that, effective Sunday, May 30, 2004and henceforth, Chicago Mercantile Exchange will begin transmitting the “Start of Official” message over the Market Data Network at 3:45 p.m. to accommodate the new GLOBEX trading hours.  The message is currently sent at 4:15 p.m. 

The transmission time for MO messages will remain unchanged at 1:55 p.m.

In addition, please be reminded that new holiday trading hours are in effect for GLOBEX beginning Sunday, May 30, 2004.  Please see notice number Q2004-51 detailing these changes, which is located at:

http://www.cme.com/trading/dta/dist/7201.html

If you have any questions regarding this notice, please contact:

Marilee Radecki                      312.930.8193              mradecki@cme.com

Lisa Amato                              312.338.2654              lamato@cme.com

Thank you.