GSCI ER Futures vs GSCI ER 100 Basket Spread Effective 10/31/06

Performance Bond (Margin) Advisory Notices

To	Clearing Member Firms, Chief Financial Officers, Back Office Managers & Margin Managers
From	Clearing House Department
Subject	GSCI ER Futures vs GSCI ER 100 Basket Spread Effective 10/31/06
Notice Date	2006-10-31
Notice Number	06-266
Effective Date	2006-10-31
Chicago Mercantile Exchange Inc., Performance Bond staff approved the performance bond requirements for GSCI ER Futures vs. GSCI ER Futures Basket Spread. These margins will become effective with the close of business on October 31, 2006. For the full text of this advisory . . .