Iran officially reopens Strait of Hormuz amid US-Iran-Israel tensions

Iran has reopened the Strait of Hormuz, a de-escalation signal in the US-Iran-Israel conflict. The move touches several Polymarket contracts, including the likelihood of the UK sending warships through the strait, now at 6% YES.

Market reaction

The warships through the Strait of Hormuz market has the UK at 6%, down from 12% a week ago. The reopening makes naval passage physically possible again, but the market is thin: only $427 is needed to move the price 5 percentage points.

The Trump’s Hormuz blockade announcement market shows stronger conviction at 93.5% YES for a formal US announcement by May 31. Iran’s reopening fits the de-escalation trajectory and makes a Trump announcement more likely.

Why it matters

The reopening is a concrete step toward reducing conflict intensity, but the ceasefire remains fragile and Iran has been assertive in the post-war period. The UK warship market sits at 6%, with traders waiting for actual naval movements or diplomatic signals before pricing in more risk.

What to watch

At 6¢, a YES share in the UK warship market pays 16.67x if it resolves YES. That bet requires either swift diplomatic progression or imminent naval deployments. Key triggers: UK Ministry of Defence announcements and US CENTCOM statements. Any confirmation of warship movement or a diplomatic breakthrough would likely shift these contracts.

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