
USDA's August WASDE put the 2026 national corn yield at 180.7 bu/ac, down from 183 in July and about two bushels below pre-report expectations. Soybean yield fell to 52.7 bu/ac, and harvested area for both crops rose about one million acres above expectations.
New-crop corn stocks fell to 1.653 billion bushels, while soybean stocks rose to 320 million.
The lower corn yield and tighter stocks support corn prices. Higher soybean area and stocks weigh on soybean prices despite the lower yield.
After 1,040 past bullish report events, Corn moved a median +0.5% over 5 sessions (62% higher; middle half -0.9% to +2.0%), and +0.8% over 20.
After 788 past bearish report events, Soybeans moved a median -0.3% over 5 sessions (47% higher; middle half -2.0% to +1.5%), and -0.9% 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.