Grain futures experienced a shift in momentum during Wednesday's session, with prices turning lower across multiple products. Soybean futures finished mixed after initially testing 12.04 on Bloomberg reports of fall delivery for Chinese purchases, before profit-taking pulled prices back toward the 12.00 objective. Corn futures traded sideways to lower as exponentially improving crop conditions offset positive ethanol export data, with December corn falling 8 3/4 cents to finish at 4.55 1/2. Meanwhile, wheat futures broke a six-day winning streak, encountering overhead resistance as September wheat slipped 10 1/4 cents to settle at 6.08 1/4.