Beginning Wednesday, May 25, 2005, dissemination of the list of newly-generated strike prices, based on settlement prices in the underlying futures contracts, will change. Category Code “x” Text Messages will be disseminated at the following approximate times, shortly after the close of the respective markets:

            Agricultural commodities:  2:00 p.m. Central Time

            Currency & Interest Rate Contracts:  3:00 p.m. Central Time

            Equities:  4:30 p.m. Central Time

Currently, these strike prices are disseminated in one transmission at approximately 4:30 p.m. 

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

Marilee Radecki          mradecki@cme.com              312.930.8193 

Kevin Brady                 kbrady@cme.com                  312.648.3653