The Exchange has announced changes in Exchange minimum margin requirements effective as of the close of business Monday, December 17, 2007. 

These changes are detailed on the Exchange’s website at www.cbot.com/cbot/pub/page/0,3181,136,00.html#Changes. 

Questions in this regard may be directed to to Nikolai Mazeika, 312-347-4132 or nikolai.mazeika@cmegroup.com.