Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| August 31 | 0% |
| August 15 | 0% |
Market context
Polymarket prices this contract at **4% YES** today, which implies traders think IMF Portwatch is unlikely to publish a 7-day average of at least 60 Strait of Hormuz transits before settlement. On Polymarket, buyers hold USDC on Polygon and the market resolves through conditional tokens, so the key question is not whether traffic feels “normal” in the abstract, but whether the published Portwatch series clears that exact threshold. Reuters reported that after renewed attacks and a fresh U.S. blockade in mid-July, only three commodity vessels crossed on 17 July and traffic had fallen to a multi-week low, well below the pre-conflict benchmark of roughly 60-plus daily movements.[14][15]
The comparison set matters because this market has already shown that abrupt policy shifts can move the tape quickly, but sustained normalisation has proved harder. Reuters and NBC reported near-standstill conditions in April, with single-digit daily transits versus roughly 140 normally, while later coverage in June noted a sharp uptick that still left flows around half of peacetime levels.[2][10][4] That history argues the current low price is largely a read-through from persistent operational risk rather than a view that one or two busy days will change the settlement outcome.
A trader should watch any ceasefire enforcement, maritime security announcements, and whether Iran or the U.S. alters transit conditions again, because those decisions have repeatedly changed vessel routing. Reuters said the latest downturn followed renewed strikes and safety concerns, while the NYT described a 60-day negotiation phase and technical reopening terms that included mine clearance, underlining that administrative reopening does not automatically mean Portwatch will post a qualifying 7-day average.[11][14] The market will move fastest if shipping data show several consecutive days above recent lows, but the settlement depends only on the published Portwatch average, not on headlines alone.
Methodology
We track Strait of Hormuz traffic returns to normal 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
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
- 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.
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.
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