A US-brokered maritime ceasefire gives Ukrainian grain exporters access to protected corridors, covering about 10 million tonnes of previously trapped grain. Letters of credit still carry 200-300 basis point war risk premiums, adding $50-75/t to costs, and Russia's participation depends on sanctions relief for Rosselkhozbank and SWIFT reconnection.
Lower shipping risk could return Black Sea grain to export markets, adding supply and easing prices. Financing costs and insurance limits, however, keep the effective export cost high and cap the bearish impact.
After 80 past bearish geopolitics events, Wheat (SRW) moved a median -0.4% over 5 sessions (44% higher; middle half -1.4% to +1.9%), and -0.5% over 20.
After 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.
Not enough comparable past events yet for a historical read.
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.