The Grain Farmers of Ontario report says the December 9 WASDE cut US corn export demand by 75 million bushels, raising ending stocks to 1.257 billion bushels. Soybean numbers were unchanged, with ending stocks at 220 million bushels.
Lower US corn export demand and higher stocks are bearish for corn prices, while unchanged soybean balances leave soy prices driven by export demand.
After 1,102 past bearish report events, CORN moved a median -0.2% over 5 sessions (47% higher; middle half -1.8% to +1.3%), and +0.0% over 20.
After 563 past neutral report events, SOY moved a median -0.1% over 5 sessions (48% higher; middle half -1.7% to +1.6%), and -0.1% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.