CME Instrument Group Code Changes - Effective Sunday, July 29, 2007

Market Data Advisory Notices

To	Market Data Distributors
From	Market Data Operations
Subject	CME Instrument Group Code Changes - Effective Sunday, July 29, 2007 - RLC Message Users Only
Notice Date	2007-06-27
Notice Number	Q2007-161
Effective Date	2007-07-29
In preparation for upcoming new product launches, the existing Instrument Group Codes will be changed. The Instrument Group Code is found in the Instrument Creation (MO) message in positions 70-71. This change will be effective in all customer environments (Production, Certification and New Release) on Sunday, July 29, 2007. Please view the attached chart for the affected CME products.