US forces seize vessel with 1.9M barrels of Iranian oil

US forces have seized a vessel carrying 1.9 million barrels of Iranian oil, according to US Attorney Pirro, executed under a federal seizure warrant. The odds of US escorts through the Strait of Hormuz by April 30 sit at 5.5% YES.

Market reaction

The Hormuz escort market dropped from 6% a day ago and from 16% a week ago. The April 30 contract trades at 5.5% YES even after the seizure. Moving the price five points requires $1,491, indicating moderate liquidity.

The probability of Iran successfully targeting ships by April 30 is at 8.9% YES, down sharply from 31% a day ago. The largest move in that market was an 8-point drop, suggesting traders read the seizure as reducing rather than increasing the risk of Iranian ship targeting. The Iran targeting market has thin liquidity: $272 can move the odds five points.

Why it matters

The seizure is a direct escalation, but traders are pricing it as insufficient to trigger either a wave of military escorts or Iranian retaliations in the near term. Tensions were already elevated, and the market’s response, with both contracts falling over the past week, implies that traders see the seizure as a contained enforcement action rather than a precursor to broader conflict. At 5.5¢, a YES share for US escorts pays $1 if it resolves, a potential 18x return. The value depends on whether this incident prompts a decisive US military response within the next week.

What to watch

Official statements from CENTCOM and the Pentagon, along with any response from Iran’s IRGC, are the most likely catalysts to move these contracts in either direction.

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