
Russia's invasion of Ukraine puts supplies at risk, since Russia and Ukraine together account for 29% of global wheat exports, shipped mainly through Black Sea ports. Ukraine is also one of the top four corn exporters, shipping about 4.5 million tonnes a month before the invasion.
Disruption to Black Sea wheat and corn flows forces importers such as Egypt, Turkey, China and the EU to find replacement supply, which supports global grain and feed prices.
After 323 past bullish geopolitics events, CORN moved a median +0.5% over 5 sessions (57% higher; middle half -1.5% to +2.9%), and +0.9% over 20.
After 361 past bullish geopolitics events, WHEAT moved a median +0.7% over 5 sessions (58% higher; middle half -1.4% to +3.7%), and +1.3% 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.
Ukraine is a top-four corn exporter shipping about 4.5 Mt a month, so supply risk was priced into corn.