Effective Monday, April 20, 2009, corn, wheat, and soybean calendar swaps and corn basis swaps trading on CME ClearPort will have a new listing convention. Current listing convention is 12 consecutive months.
New listing convention is as follows:
· 16 consecutive months in corn calendar and basis swaps
· 14 consecutive months in wheat calendar swaps
· 15 consecutive months in soybean calendar swaps