Effective Thursday, January 11, 2007, the time period of the closing range for Wheat futures traded in open auction will be reduced to the last 30 seconds of trading.  Consequently, the closing period in Wheat Options will be reduced to 30 seconds as well. 

Currently, the designated closing period for Wheat futures and options is the last 60 seconds of trading.  The closing period for all other Agricultural futures products and their corresponding options will remain the same.  The time bracket symbol to be used for all trades executed during the closing period is “%”. 

Questions regarding this notice may be directed to Jennifer Baum, (312) 341-3124, jbaum@cbot.com or Dean Payton, (312) 435-3658, dpayton@cbot.com in the Office of Investigations and Audits.