New OneChicago Select Index K 6/21/07

Performance Bond (Margin) Advisory Notices

To	Clearing Member Firms, Chief Financial Officers, Back Office Managers & Margin Managers
From	Clearing House Department
Subject	New OneChicago Select Index K 6/21/07
Notice Date	2007-06-20
Notice Number	07-143
Effective Date	2007-06-21
Chicago Mercantile Exchange Inc., Performance Bond staff approved the performance bond requirements for the new OneChicago Select Index K listed on the attached advisory. These margins will become effective with the launch of this product on Thursday, June 21, 2007. For the full text of this advisory . . .