The Variable Storage Rate (VSR) concept in Chicago Board of Trade (CBOT) Wheat futures examines nearby calendar spreads to determine adjustments in contract premium (storage) charges. The September – December wheat calendar spread averaged 111.8% of financial full carry during the period of July 19, 2010 through August 27, 2010. Since this result is greater than 80% of financial full carry, the maximum premium charge that a wheat regular delivery facility may charge holders of its outstanding shipping certificates will increase from 26.5/100s of one cent per bushel per day (approximately 8 cents per bushel per month) to 36.5/100s of one cent per bushel per day (approximately 11 cents per bushel per month) effective September 18, 2010.
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