
Since July 2026, Russian attacks have blocked Ukraine's Black Sea ports, which previously handled about 90% of its grain, oilseed and processed product exports. Stocks have built to 10 million tonnes at the start of the season versus a usual 2 million, and could reach 35-40 million tonnes by summer 2027.
A prolonged blockade removes a major share of Ukrainian grain and oilseed supply from world markets, supporting global wheat, corn and oilseed prices while Ukrainian farm stocks keep piling up.
After 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.
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.