CHICAGO, Illinois (Agriculture.com)--The pre-opening prices for the CME Group grain commodities for Thursday, July 28, 2011 are mixed. Corn is seen opening 2-4 cents lower, soybeans up 1-2 cents, and wheat 3-5 cents higher. 

In overnight electronic trading, the Dec. corn futures contract traded 2 cents lower at $6.89 1/2 per bushel. The Nov. soybean futures contract traded 1 1/2 cents higher at $13.82 per bushel. The Sep. wheat futures contract traded 6 3/4 cents higher at $7.11 1/2. For Dec. soymeal futures, the contract traded $2.30 higher at $365.90 and Dec. soyoil $0.15 higher. 

The outside markets are not supportive for Thursday's grain trade. The real factors driving the calls are the mostly mixed overnight markets.