Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets UK) Pick polygram.ink (preferred broker) |
52% | 48% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
52% | 48% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Market context
The Strait of Hormuz remains effectively closed to commercial shipping, with daily transit numbers for non-Iranian vessels dropping to single digits since mid-March 2026, a stark fall from the pre-crisis average of over 153 ships per day[2][3]. Although a ceasefire between the US and Iran took effect on 8 April, traffic has recovered only partially; by mid-June, crossings reached 42.5% of normal peacetime levels, averaging 28 vessels over the last five days[5]. The current 57% implied probability that traffic will return to normal (defined as a 7-day moving average of 60+ transits) by December 2026 reflects cautious optimism that the June 14 memorandum of understanding, which mandates toll-free passage for 60 days, will accelerate recovery despite lingering technical hurdles like mine clearance[5][6].
Historically, such chokepoints recover slowly after conflict; the 95% traffic diminution since the conflict’s onset suggests that reaching 60 daily transits is a significant threshold, not merely a return to baseline[4]. Traders should monitor the expiration of the 60-day toll-free arrangement in late August and the progress of mine-clearing operations, which the US-Iran deal acknowledges could delay full restoration[6]. A recent rebound to 25 crossings on 18 June, the strongest daily surge in two months, offers a positive signal but remains well below the 60-vessel target required for market resolution[7]. Key catalysts include any formal announcements from Iran regarding mine clearance completion and updates from IMF Portwatch on the 7-day moving average, which will determine if the threshold is breached before the settlement window closes.
Methodology
We track Strait of Hormuz traffic returns to normal by December 31? 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
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?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets UK. 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 does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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.
- 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.
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