Effective March 24, 2008, CME and CBOT will adopt common rule language with respect to Rule 527 (“Outtrades, Errors and Mishandling of Orders”). The rule sets forth the procedures and requirements for the appropriate resolution of outtrades, errors and the mishandling of orders. The key elements of the rule are summarized below, and the complete text of Rule 527 appears at the end of this advisory.

 - Rule 527 - 03.11.2008