Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative) 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 → |
Market context
The Strait of Hormuz only needs a seven-day average of at least 60 tracked ship arrivals on any day before 30 June 2026, and recent reporting suggests traffic has been moving in the right direction but has not clearly sustained that threshold. Reuters said AXSMarine recorded 62 transits on 24 June, the highest single-day count since the conflict began, but still described overall traffic as “not yet normalised fully”; CNBC also reported 125 transits in the week to 21 June and 62 crossings on 24 June, while noting a renewed attack on a cargo ship had already rattled confidence. [1][5]
That context matters because this kind of market is being read through platform conventions as much as through the shipping data itself. On Polymarket, the quoted crowd probability is a straight yes/no implied probability, whereas Kalshi and Smarkets typically show prices in different formats and may add fees at the point of trade, which can make the same view look slightly cheaper or dearer depending on execution; Betfair’s exchange model also prices liquidity differently and usually requires a funded account plus KYC. For comparison, Kalshi previously showed Hormuz normalisation odds above 50% after the June deal, but Reuters-linked and maritime tracker updates later suggested recovery remained fragile rather than settled. [6][12][17]
The main catalysts are further security incidents, any new US-Iran or Gulf shipping announcements, and whether operators keep routing vessels through the strait at a steady pace rather than in bursts. Market participants will also watch whether future maritime tracker updates hold around the recent 30-60 daily range or fall back after disruptions, because the resolution standard is a 7-day moving average, not a one-day spike. [2][3][10]
Methodology
We read Strait of Hormuz traffic returns to normal by end of June? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.
Resolution & payout
Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.
Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.
FAQ
- Polymarket vs Kalshi — which is better?
- Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.
- Is Betfair a Polymarket alternative?
- Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.
- What about Smarkets as an alternative?
- Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
- Which platform is accessible globally?
- Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Polymarket Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.
- Are all these platforms regulated?
- No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.
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