Market  Data Advisory Notices
To Market Data Distributors
From Market Data Operations
Subject Elimination of Full Book Depth Equities – Effective May 21, 2006
Notice Date 2006-05-19
Notice Number Q2006-77
Effective Date 2006-05-21

Effective this Sunday, May 21, 2006, (trade date Monday, May 22), CME® will eliminate full book depth messages for the CME Russell 2000®, CME NASDAQ-100®, CME S&P 500® and CME S&P MidCap 400® futures contracts.  This change in reporting will help to reduce bandwidth utilization. Please note that the top five bids/asks of the book will continue to be provided for these products.                                                                     

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

Marilee Radecki                                312.930.8193                        mradecki@cme.com

Kevin Brady                                      312.648.3653                        kbrady@cme.com

Thank you.