Iran claims full control over the Strait of Hormuz, signaling potential conflict. The odds of Trump announcing the end of the US-Iran ceasefire by April 21 now sit at 22%, up from 6% just 24 hours ago.
Market reaction
Iran’s move to impose a “toll booth” system in the Strait of Hormuz has shaken traders. The ceasefire market shows a sharp increase in odds for an end to the ceasefire, with the biggest movement in the April 21 sub-market. Three days remain until resolution. Meanwhile, the market for diplomatic meetings by April 30 fell to 10.5% YES, down from 22% a day ago.
The volume tells the story. With $7,248 in USDC traded on the ceasefire market, the liquidity is thin enough that a single $880 order moved the price by 5 points. That 5-point spike was the largest move in the last 24 hours, triggered by Iran’s announcement.
Why it matters
Iran’s toll booth claim over the Strait of Hormuz, made amid stalled negotiations, is a direct challenge to the US naval blockade and a possible precursor to renewed military conflict. Traders betting on a ceasefire end by April 21 are looking at a YES share priced at 22¢, offering a 6.25x return if it resolves YES. For this bet to pay off, the diplomatic gap would need to stay open through April 21.
What to watch
Statements from Trump or the Pentagon on the Hormuz situation could move these markets fast. Any sudden shift toward diplomacy, or an explicit rejection of it, would reprice both the ceasefire and diplomatic meeting contracts.
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Trump Announces Us X Iran Ceasefire| Contract | Odds | Δ since publish | Volume 24h | |
|---|---|---|---|---|
| April 21, 2026 | 22% | — | — | Trade → |
| Contract | Odds | Δ since publish | Volume 24h | |
|---|---|---|---|---|
| April 30 | 10.5% | — | — | Trade → |
