Iran asserts control over Strait of Hormuz, warns of blockade retaliation

Iranian Parliament Speaker Mohammad Bagher Ghalibaf declared Tehran’s exclusive control over the Strait of Hormuz, warning that passage will be blocked if Iran faces a blockade. The market for Trump announcing the lifting of the US blockade by May 31 sits at 78% YES, down from 90% yesterday.

## Market reaction

Ghalibaf’s statement has rattled traders in the Hormuz blockade market. The odds for an April 19 announcement dropped to 8%, down from 28%. The term structure shows skepticism about immediate resolution, with a 70-point spread from April 19 to May 31, suggesting traders expect a key event in that window.

In the diplomatic meetings market, odds for a meeting by April 30 fell to 13.2%, consistent with a hardened Iranian stance. Ghalibaf’s aggressive rhetoric makes near-term diplomacy less likely.

## Why it matters

The Hormuz blockade market saw $29,602 in actual USDC traded over 24 hours, with $1,419 needed to move prices by 5 points, indicating moderate liquidity. A 5-point drop occurred at 12:19 PM, suggesting a significant sell-off after Ghalibaf’s comments.

Ghalibaf’s claim reinforces Iran’s leverage over a chokepoint that handles roughly 20% of global oil transit. For traders, this signals continued volatility with no immediate de-escalation. Buying YES at 78¢ pays $1 if Trump lifts the blockade by May, a bet that depends on diplomatic breakthroughs within 43 days.

## What to watch

Watch for Trump’s statements, CENTCOM operational updates, or moves from Iranian allies like Oman. These will shape odds in both the blockade and diplomatic meetings markets.

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