
USDA-NASS will release its quarterly Grain Stocks report on Friday, Sept. 29, with Sept.
1 data representing 2016-17 ending stocks. The average trade estimate is 2.246 billion bushels for corn and 339 million for soybeans, both above year-earlier levels.
Stocks above trade expectations would be bearish for corn and soybeans, while a surprise below would support prices; the report also gives clues on summer feed usage.
After 770 past neutral report events, Corn moved a median +0.2% over 5 sessions (54% higher; middle half -1.1% to +1.6%), and +0.7% over 20.
After 563 past neutral report events, Soybeans 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.