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Corn and soybean futures fell sharply after the US paused nearly two weeks of daily strikes against Iran, and crude oil dropped. Corn fell as much as 3.3%, its largest intraday decline since mid-January, and soybeans fell as much as 3.4%.
Soyoil also slipped.
Corn, soybeans and soyoil are key biofuel feedstocks, so they tend to track crude oil. Lower energy prices reduce biofuel margin support and pressure grain and oilseed prices.
bloomberg.comErin AilworthJul 27, 2026After 87 past bearish geopolitics events, Corn moved a median +0.1% over 5 sessions (51% higher; middle half -1.5% to +2.1%), and +0.3% over 20.
After 53 past bearish geopolitics events, Soybeans moved a median -0.3% over 5 sessions (47% higher; middle half -1.9% to +1.2%), and +1.0% over 20.
After 28 past bearish geopolitics events, Soybean Oil moved a median -2.7% over 5 sessions (21% higher; middle half -8.3% to -0.7%), and -2.1% over 20.
After 255 past bearish geopolitics events, Crude Oil (WTI) moved a median -2.4% over 5 sessions (31% higher; middle half -7.0% to +1.7%), and -5.0% 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.
The US pause in strikes on Iran pushed crude oil lower, cutting energy and biofuel-linked demand for soyoil, and it triggered a broad sell-off in soybean complex futures on the same day.
US pause in strikes on Iran sent crude sharply lower, and corn had its largest intraday drop since January as energy/ethanol-linked risk premium and sentiment unwound.
The US pause in Iran strikes pushed crude lower and triggered a broad sell-off in soybeans and corn, with soyoil also slipping on energy-driven sentiment.
