
Oil rose about $1 a barrel on September 30, with Brent November settling at $103.50 and WTI at $90.42, and both logged steep monthly gains. The rise followed stalled US-Iran peace talks and tightening US fuel markets, and Gulf exports were recovering toward 2025 levels.
Stalled diplomacy keeps a risk premium in crude, and tight US fuel markets lift diesel costs for farm and trucking operations. Both factors raise the cost of feed inputs and delivery.
After 626 past bullish geopolitics events, Crude Oil (WTI) moved a median +2.1% over 5 sessions (62% higher; middle half -2.3% to +8.5%), and +1.6% over 20.
After 656 past bullish geopolitics events, Crude Oil (Brent) moved a median +1.9% over 5 sessions (63% higher; middle half -2.7% to +6.6%), and +0.7% over 20.
After 250 past bullish geopolitics events, ULSD / Diesel moved a median +1.7% over 5 sessions (58% higher; middle half -3.6% to +8.7%), and +0.9% 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.