The United States brokered a fragile Black Sea ceasefire to protect grain shipments, with Russia attaching conditions such as sanctions relief and SWIFT access. A grain ship was hit in an attack at Odesa earlier in March.
If the ceasefire holds, wheat and corn export flows from the Black Sea would normalize and weigh on prices; collapse would tighten supplies and lift freight costs.
After 38 past neutral geopolitics events, Wheat (SRW) moved a median +0.1% over 5 sessions (53% higher; middle half -1.6% to +1.5%), and +0.8% over 20.
After 31 past neutral geopolitics events, Corn moved a median -0.3% over 5 sessions (42% higher; middle half -2.3% to +1.1%), and +0.2% 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.