Update: New Indicative Price Quote Implementation on August 14, 2005/Mock Trading Scheduled for July 30, 2005

Market Data Advisory Notices

To	Market Data Distributors
From	Market Data Operations
Subject	Update: New Indicative Price Quote Implementation on August 14, 2005/Mock Trading Scheduled for July 30, 2005 – Final Chance to Test!
Notice Date	2005-07-27
Notice Number	Q2005-100
Effective Date
As a reminder.......on Sunday, August 14, 2005 (trade date August 15^th), additional enhancements to 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 details the impact of the changes and the second Mock Trading session scheduled for this Saturday, July 30, 2005.