Which countries will send warships through the Strait of Hormuz by June 30?

Platform comparison

Active sub-markets

Market context

The Strait of Hormuz, a 54-nautical-mile waterway between Iran and Oman, remains one of the world's most strategically contested chokepoints. Roughly one-third of seaborne traded oil passes through it annually. Military transits by non-regional powers—particularly the United States, United Kingdom, and France—have become routine assertions of freedom of navigation, whilst regional actors including Iran, Saudi Arabia, and the UAE maintain constant naval presence. The market's 5% implied probability reflects the baseline expectation that at least one listed country will conduct a documented warship transit by June 2026, a 18-month window that encompasses standard operational cycles and seasonal deployment patterns.

Historical precedent suggests high-frequency transits are the norm rather than exception. The US Navy has conducted dozens of freedom-of-navigation operations through the strait since 2019, often accompanied by allied vessels. British Royal Navy frigates and destroyers transit regularly as part of Gulf station rotations. French naval operations in the region, though less publicised, occur within similar intervals. The low probability assigned here may reflect either market scepticism about documentation standards or uncertainty over which specific countries the market lists—a critical distinction, since transits by established Gulf operators differ materially from those by distant naval powers.

Traders should monitor official naval announcements, particularly US 5th Fleet statements and UK Ministry of Defence deployment schedules, which typically precede or immediately follow major transits. Regional escalation—whether sanctions-related, incident-driven, or tied to broader Middle East tensions—would increase transit likelihood. The settlement hinges on "credible reporting" confirmation, meaning Reuters, AP, or official military statements carry decisive weight. Regulatory access varies: UK traders face no specific KYC barriers below £1,500 stake levels under current FCA guidance, whilst US participants encounter CFTC reach considerations depending on their broker's registration status.

Methodology

We track Which countries will send warships through the Strait of Hormuz by June 30? 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

Is this market available outside the US?

Polymarket Tax UK 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'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.

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?

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