
A USDA economist co-authored research finding that Ukraine and Brazil have become significant players in setting global corn prices. The study places U.S. price discovery weight at 55 percent, Argentina at 32 percent, Brazil at 8.8 percent, and Ukraine at 3.2 percent.
A broader set of price-setting markets means South American and Black Sea supply news can move global corn values more than before. Buyers should watch those origins alongside U.S. data.
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.
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.