Beginning on Monday, July 25, 2011, CME Group will change the listing cycle for CBOT Wheat options to always include the first three contract expirations. The current listing cycle always includes only the first two contract expirations. This change is being implemented to facilitate the calculation of a volatility index for Wheat.
CME Group is the world's leading and most diverse derivatives marketplace. The company is comprised of four Designated Contract Markets (DCMs). Further information on each exchange's rules and product listings can be found by clicking on the links to CME, CBOT, NYMEX and COMEX.