Farsi, Hengam, Hormuz or Kharg Island no longer under Iranian control by 2026?

Platform comparison

Market context

The base case is still that **Iran keeps control** of Farsi, Hengam, Hormuz and Kharg by late September, which is why the market sits at just **2% YES**. Farsi is a tiny but militarised Iranian island with an IRGC Navy base, while Iran’s sovereignty over it was formally recognised in a bilateral agreement with Saudi Arabia; that makes a clean transfer of control a very high bar.[1][2][14] Kharg is also deeply embedded in Iran’s oil system as a major export and terminal island, so any loss of control there would usually imply a much broader military shock than the market is currently pricing.[16]

Historically, the closest comparables are not isolated raids but shifts in sovereignty after war, negotiated transfer, or occupation. The 1971 British withdrawal from the Gulf islands and the later U.S.-Iran Farsi incident both point to the same read: these places can be contested, militarised, or symbolically pressured without changing who actually governs them.[13][15] That is why the consensus remains heavily against a YES; the underdog case only has value if a trader believes there is a credible pathway to sustained seizure and administration by another state, not just temporary disruption.

Catalysts to watch are any escalation around the Strait of Hormuz, military declarations about island garrisons, and changes in shipping-security posture that might indicate an attempted landing or blockade. Farsi is especially sensitive because it sits close to the Gulf’s maritime traffic and already hosts military infrastructure, but even sharper rhetoric would not settle the market unless actual control changes hands.[1][8][12] For a YES to land, traders would need a verified transfer of primary governmental or military control before the deadline, which means announcements, threats or isolated strikes are not enough.[12]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Farsi, Hengam, Hormuz or Kharg Island no longer under Iranian control by 2026? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

UK Frequently Asked Questions

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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.