US seizes oil tanker Majestic X amid Hormuz standoff escalation

The US seized the oil tanker Majestic X, ratcheting up the standoff in the Strait of Hormuz. Odds for 80 ships transiting the Strait by April 30 sit at 5% YES, down from 51% a week ago.

Market reaction

The ships transit market moved quickly after the seizure, reflecting tit-for-tat seizures that have disrupted commercial navigation. With only 6 days left, traders look skeptical about traffic returning to normal. The UK warships market sits flat at 1.9% YES, showing low confidence in immediate military intervention.

Why it matters

Volumes tell the story. The ships transit market saw $1,797 in USDC traded over the past 24 hours, a fraction of its $40,514 face value. It takes just $542 to move odds 5 points, making the market vulnerable to large swings from small trades. This thin liquidity means traders are staying on the sidelines.

The seizure reinforces the US commitment to sanctions enforcement and maintaining the blockade, which makes it less likely Trump lifts the blockade soon. The Trump blockade market is at 61.5% YES, down from 72% yesterday.

What to watch

The blockade market, with $95,253 in daily USDC volume, shows stronger trader conviction than the transit market. At 5.2¢, buying YES on ships transiting by April 30 pays $1, a 19.2x return. But that bet only makes sense if you believe diplomatic channels will open in the next six days.

Watch for announcements from the UK Ministry of Defence or shifts in US Navy posture. Any diplomatic moves or military actions by Trump or Iran’s Foreign Minister Abbas Araghchi could change these odds fast.

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