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

Platform comparison

Market context

Donald Trump would need to publicly say the United States is officially calling the Strait of Hormuz the “Strait of Trump”, “Trump Strait” or a similar Trump-branded name by 31 May. The market is pricing that at 1% yes, so the no side is the clear favourite. At that level, the crowd is effectively saying the bar is not just a passing joke or social post, but a formal announcement that is both explicit and attributable to Trump before the deadline.

The closest comparable cases are Trump’s other name-change flourishes and symbolic foreign-policy gestures, which often start as rhetoric and only rarely become official federal usage. Markets have tended to discount headline-grabbing Trump language unless it is repeated through formal channels or backed by government paperwork. That leaves some room for a contrarian yes view if a public message lands in the right form, but the consensus remains that this would be an unusual and low-probability escalation, not a routine messaging tweak.

The main catalysts are any Truth Social post, rally remark, press availability, or White House statement that uses the exact wording, plus any follow-up from official US communications channels. Traders should also watch for geopolitical flare-ups in the Gulf, since fresh tension around shipping or Iran could make a theatrical rename more plausible as part of a broader messaging push. A recent Binance Square post cited Polymarket odds falling to about 6% earlier in the week, suggesting sentiment has already moved sharply against yes; with the current 1% implied probability, the market is firmly treating this as a long-shot event.

Sources: 1 · 2 · 3 · 4 · 5

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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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.

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.