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Iran's Revolutionary Guard reportedly said it closed the Strait of Hormuz, and US crude jumped 8.4% to $72.74 per barrel while Brent rose 9% to $79.45. Prices hit their highest levels since the June 2025 strikes on Iran's nuclear facilities, amid US and Israeli airstrikes that reportedly killed Supreme Leader Khamenei.
About a third of seaborne oil passes through the Strait, so a credible closure threatens a major supply shock and sharply higher crude and refined product prices. Feed costs tied to energy, freight and diesel would rise with crude.
cnbc.comSpencer KimballMar 1, 2026After 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.
After 136 past bullish geopolitics events, Natural Gas moved a median +2.7% over 5 sessions (63% higher; middle half -1.8% to +8.8%), and +4.0% 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.
