US blockades Iranian ports, escalating tensions in Strait of Hormuz

The US announced a blockade of Iranian ports, escalating military enforcement in the Strait of Hormuz. The market for the UK sending warships through the strait by April 30 now sits at 9.5% YES, down from 12% a week ago.

Market reaction

The UK warships through Hormuz market is stable at 9.5% YES, meaning traders largely doubt the UK will deploy by the deadline despite the blockade. Markets for other potential naval deployments, including Canada and India, also sit at 9.5% YES.

Volume is thin at $2,086 in USDC traded, and it takes just $478 to move prices by five percentage points. The largest price move in the past 24 hours was a one-point drop, suggesting traders are waiting for concrete developments before committing.

Why it matters

The US blockade and military enforcement signal escalating tensions that make short-term normalization in the Strait unlikely. The odds for traffic returning to normal levels by the end of May remain uncertain. At 6¢, a YES share on UK warships pays $1 if resolved, a 16.7x return. Traders would need signals from the UK Ministry of Defence or French naval announcements to justify these high-risk positions.

What to watch

Official military movements or diplomatic signals from the UK, France, and other potential allies. Any confirmation of allied naval deployments would move these markets significantly.