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Grain futures were mostly weaker overnight after a multi-week rally, though December corn hit a contract and three-year high and November soybeans reached a 2.5-year high. Managed funds loaded up on corn and soybean longs, and US-Iran strikes in the Strait of Hormuz pushed crude oil sharply higher.
Heavy fund long positioning raises the risk of corrective pullbacks, while renewed Hormuz military activity lifts crude and energy-linked input costs for feed producers.
profarmer.comJim WyckoffAug 31, 2026After 31 past neutral geopolitics events, Corn moved a median -0.3% over 5 sessions (42% higher; middle half -2.3% to +1.1%), and +0.2% over 20.
After 20 past neutral geopolitics events, Soybeans moved a median -0.6% over 5 sessions (45% higher; middle half -2.2% to +1.5%), and +0.9% over 20.
After 626 past bullish geopolitics events, Crude Oil (WTI) moved a median +2.1% over 5 sessions (62% higher; middle half -2.3% to +8.5%), and +1.6% 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.
