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War-risk insurance premiums for Black Sea voyages reportedly rose twelvefold to $2.5 million per vessel following the October 28 drone attack that sank the Contship Jet off Bulgaria. Romania reported year-on-year grain export growth at Constanta and said it had no plans to withdraw capacity, while France extended the deployment of a maritime patrol aircraft over the western Black Sea.
Higher insurance costs raise the expense of moving grain through the region, but confidence in Romanian ports and alternative routes may limit supply disruption and keep grain prices from fully reflecting the risk. Freight and insurance costs are more directly affected than wheat prices.
ainvest.comCarina RivasNov 5, 2026After 361 past bullish geopolitics events, Wheat (SRW) moved a median +0.7% over 5 sessions (58% higher; middle half -1.4% to +3.7%), and +1.3% over 20.
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.
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.
