Performance Bond Changes Effective 9/19/07

Performance Bond (Margin) Advisory Notices

To	Clearing Member Firms, Chief Financial Officers, Back Office Managers & Margin Managers
From	Clearing House Department
Subject	Performance Bond Changes Effective 9/19/07
Notice Date	2007-09-18
Notice Number	07-220
Effective Date	2007-09-19
As per the normal review of market volatility to ensure adequate collateral coverage, the Chicago Mercantile Exchange Inc., Performance Bond staff approved the performance bond requirements for the OneChicago products listed on the attached advisory. These margins will become effective at the close of business on Wednesday, September 19, 2007. For the full text of this advisory . . .