Beginning February 18 with March 2000 option contracts and beyond . . . on the last trading day of an option contract, option trading stops at the same time as the underlying futures contract. For example, on the last trading day of an ag option contract, trading stops at 1:15 p.m.
Effective with May 2001 option contracts and beyond . . . the last trading day for CBOT ag options changes to the last Friday which precedes by at least 2 business days the last business day of the month preceding the option month. For some contract months this change may mean an additional week of option trading.

CBOT 2001 Notice Calendar
Grains, Oilseeds & Financial Options

Month Previous Last
Trading Day New Last Trading Day Beginning with May '01 Change in Last Trading Day
January Friday, Dec. 15, 2000 Friday, Dec. 15, 2000 No change
February Friday, Jan. 19, 2001 Friday, Jan. 19, 2001 No change
March Friday, Feb. 16, 2001 Friday, Feb. 16, 2001 No change
April Friday, Mar. 23, 2001 Friday, Mar. 23, 2001 No change
May Friday, Apr. 20, 2001 Friday, Apr. 20, 2001 No change
June Friday, May 18, 2001 Friday, May 25, 2001 Week later
July Friday, June 22, 2001 Friday, June 22, 2001 No change
August Friday, July 20, 2001 Friday, July 27, 2001 Week later
September Friday, Aug. 24, 2001 Friday, Aug. 24, 2001 No change
October Friday, Sep. 21, 2001 Friday, Sep. 21, 2001 No change
November Friday, Oct. 19, 2001 Friday, Oct. 26, 2001 Week later
December Friday, Nov. 23, 2001 Friday, Nov. 23, 2001 No change