On Saturday, September 13, 2008, the replay of production-speed market data in the production environment for both FIX/FAST and RLC formats will be from 11:30 a.m. -12:00 p.m. instead of the previously announced schedule of 11:30 a.m. to 12:30 p.m. Central Time (CT).

Please contact mdo@cmegroup.com if you have any questions concerning this notice. Thank you