Confidence in short positions was slightly challenged today as traders positioned ahead of tomorrow’s USDA December WASDE. January soybeans jumped back 16.25 cents today, though not enough to offset a string of earlier double-digit losses. Thus far this week, January soybeans are down 13.25 cents, March corn has gained 3.25 cents, and March SRW is up 2.75 cents. 

Tomorrow’s WASDE report is generally deemed benign, at least as far as U.S. numbers.  USDA’s weekly Export Sales report showed continued large commitments to take corn and soybeans, and wheat got a boost from large Chinese purchases.

The weather is neutral to bearish. Argentina continues to get good rains, and more is forecast for central Braz...