Which countries will send warships through the Strait of Hormuz by August 31?

Platform comparison

Market context

The real-world question is whether any national navy other than the United States ends up sending warships through the Strait of Hormuz before the end of August, and the current 8% crowd-implied probability suggests the market is pricing that as a low-frequency, high-visibility event. The gap is wider on the platform side: the live Paridesk board shows very thin, fragmented interest across listed countries, with small 24-hour volumes and no broad market consensus, which usually argues for caution rather than conviction.[3]

Historically, the Strait has drawn bursts of naval signalling, but actual allied deployments have tended to be slow, cautious, or privately hedged. Reuters reported in June that traffic had rebounded after earlier disruption, while later reporting in July said Iran had again escalated pressure around the waterway, keeping the security picture fluid.[17][18] That matters because the market resolves on a confirmed transit by a listed country’s warship, not on speeches, consultations, or generic support for freedom of navigation. Current reporting also points the other way: BBC and other outlets say discussions with partners are ongoing, but several governments have not committed to dispatching ships, and some have explicitly ruled it out.[4][15][19]

For traders, the key catalysts are formal defence announcements, coalition decisions, and any published naval movement orders or port-call schedules involving Britain, France, Japan, South Korea, Australia, Germany, Italy, Greece, or the Netherlands, since those names have surfaced in recent reporting and commentary.[12][15][19] A recent Reuters report on 25 June said the UN halted escort operations after a vessel was targeted, underscoring how quickly the operational picture can change and why this contract can still jump on a single verified transit.[17]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.