Trump renames Strait of Hormuz to "Strait of Trump" by May 31?

Platform comparison

Market context

Donald Trump has not announced plans to rename the Strait of Hormuz, one of the world's most critical shipping chokepoints through which roughly one-third of global seaborne oil passes. No recent statements or policy proposals from Trump or his administration have signalled movement towards such a renaming. The 1% probability reflects the extreme unlikelihood of this occurring within the settlement window, given the absence of any current momentum or public discussion on the matter.

Renaming major geographical features after sitting or former presidents is extraordinarily rare in international affairs. The United States has occasionally named minor features after presidents, but renaming a strategically vital international waterway would require either unilateral action (which would lack legal standing under international maritime law) or multilateral agreement—neither of which has precedent. Iran, Oman, and the UAE all border or have interests in the strait; any formal renaming would require their consent under the UN Convention on the Law of the Sea. Historical attempts to rename significant geographical features for political purposes have consistently failed at the international level.

Traders should monitor Trump's public statements regarding Iran policy, Middle Eastern strategy, and any announcements about reshaping international agreements or naming conventions. The catalyst would likely emerge from a major geopolitical event involving the strait—such as a shipping crisis or military confrontation—that Trump might use as a platform for such a declaration. However, the absence of any current policy discussion, combined with the legal and diplomatic barriers involved, makes the low probability assessment consistent with observable conditions through May 2026.

Methodology

We track Trump renames Strait of Hormuz to "Strait of Trump" by May 31? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.