Iran seeks Strait of Hormuz control; Markets reprice oil risk

Tehran announced plans to assert control over the Strait of Hormuz, stating the effort aims to double Iran’s oil revenues and strengthen its foreign-policy leverage. The strait historically carries about 20% of global oil flows. Officials said they will limit shipping from U.S.-aligned Gulf states and exercise more consistent control of the waterway.

Prediction-market contracts recorded a marked drop in the probability that at least 20 ships will transit the strait on a given day. Contracts for May 31 registered about a 43.5% YES probability, down from roughly 87% a week earlier. Contracts for WTI crude in May 2026 moved toward higher price outcomes, with the largest sub-market showing a 56.5% probability for a $110 level and increased odds for still-higher price bands.

Market pricing shows a reduced chance of reaching the historical average of roughly 20 daily ship transits and higher likelihoods for elevated U.S. crude prices in the year ahead. Participants in prediction markets adjusted probabilities for futures and logistics risk based on the changed shipping outlook.

Control of the strait would affect Iran’s own exports because the waterway is the primary gateway for Iranian crude. Reports indicate a shift from sporadic incidents to a pattern of more regular exertion of influence by Iranian forces, which raises operational risk for tankers and commercial shippers in the region.

Diplomatic developments could alter shipping patterns and market pricing. Upcoming engagements involving U.S. Central Command, statements from Iranian authorities about strait operations, and responses from neighboring Gulf states and international organizations could change transit behavior and crude futures pricing.

Separate prediction-market contracts showed single-digit probabilities that Kharg Island would leave Iranian control by late May or June, with May 31 contracts at 5.2% and June 30 contracts at 9.5%.