Iran formalizes Hormuz control, impacting US blockade and oil price markets

## Market Snapshot

Trump’s Hormuz Blockade Announcement market shows a current probability of 29.5% for a YES outcome, down from 40% a day ago. WTI Crude Oil Prices in May 2026 market reflects increased likelihood of hitting $150, with implied probabilities rising due to the news.

## Key Takeaways

– The formalization of Iran’s control over the Strait of Hormuz appears to decrease the likelihood of the U.S. lifting its blockade. – Market pricing suggests enhanced expectations of rising WTI crude oil prices, reflecting potential supply disruptions. – The Bab el-Mandeb Strait Closure market is deemed irrelevant to this specific development, with no significant changes observed.

## Article Body

A senior Iranian lawmaker has announced a new law that will establish formal conditions for transit through the Strait of Hormuz, as reported by Press TV. This development occurs amidst ongoing conflict involving Iran, the U.S., and Israel. The Islamic Revolutionary Guard Corps (IRGC) has been enforcing a system that requires documentation and clearance for vessels, effectively controlling passage through this critical chokepoint. The new law reinforces Iran’s de facto control, as approximately 21% of global oil transits through the Strait. Despite resistance from Gulf states and U.S. threats, Iran’s measures include tolls paid in yuan or rials, excluding allies like Russia.

## Market Interpretation

The introduction of this new law is consistent with a decreased likelihood that former President Donald Trump will announce the lifting of the U.S. blockade on the Strait of Hormuz by May 31, 2026. This situation supports a NO outcome in the Trump Hormuz Blockade Announcement market. The impact is classified as moderate, given the ongoing geopolitical tensions. Additionally, the potential for disruptions in oil supply is supportive of a YES outcome for WTI crude oil prices reaching $150, suggesting a high impact on that market.

## What to Watch

Observers should monitor statements from the U.S. government and CENTCOM regarding any changes in the enforcement of the blockade. Developments in U.S.-Iran negotiations, especially mediated by third parties like Pakistan, could alter the current dynamics. Additionally, any significant military activities or diplomatic resolutions involving the Strait of Hormuz could shift market expectations and pricing in the coming weeks.

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