Iran fires on Indian ships in Strait of Hormuz, forcing retreat

Iran’s navy fired on two Indian-flagged ships, forcing them to turn back from the Strait of Hormuz. The probability of the UK sending warships through the strait by April 30 is at 7.5%, down from 12% a week ago.

Market reaction

The UK warship market sits at 7.5% after a 7-day decline. The market is thin: only $427 is needed to shift odds by 5 points. Daily trading volume is $2,086 in actual USDC. The largest single move was a 1-point drop, consistent with cautious positioning.

Why it matters

Iran firing on Indian-flagged commercial vessels signals a willingness to use force against non-adversary nations transiting the strait. In the broader countries sending warships market, this kind of aggression is more likely to deter transit attempts than provoke them, at least within the 14-day window before resolution. Current odds reflect skepticism that any country will force the issue.

What to watch

UK Ministry of Defence statements or allied naval announcements would be the clearest catalysts. Changes in Iran’s naval posture or any diplomatic backchannel activity could also move odds. The low cost to shift this market means even a single credible report of UK deployment planning could cause a sharp repricing.

Trade the odds

At 7.5¢, a YES share pays $1 if the UK sends warships, a 18x return. Buying YES here requires confidence that a major geopolitical shift happens within 14 days.

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