On Sunday, August 14, 2005 (trade date August 15^th), additional enhancements on CME® Globex® will be implemented to support options trading, which will result in the transmission of new Indicative Price Quotes (bids/asks) on outright and spread trades. These new quotes will impact users of both the ITC 2.1 and RLC formats.

This notice is a Final Reminder of the changes. It provides information on the last Mock Trading session that will be held this Saturday, August 13th. Please note that the time period for this session will be 8:00 a.m. to 9:30 a.m., Central Time.

Please view the attached notice for more information.

^{Thank you.}