Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi vs Polymarket) Pick polygram.ink (preferred broker) |
20% | 80% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
20% | 80% | 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 zero verified outbound tankers recorded over the past 72 hours as conflict between the US and Iran halts the flow of roughly 20% of global oil and gas. This choke point, critical for energy markets, has seen traffic nearly stop for weeks following Iranian assaults on vessels and the imposition of tolls, a situation President Trump has declared a prerequisite for any ceasefire yet refused to resolve through peace negotiations.
Historical precedents suggest that such bottlenecks rarely reverse without direct diplomatic breakthroughs; the brief uptick to 25 transits in June 2026 following a US–Iran peace framework collapsed almost immediately after a commercial ship was struck, proving that temporary spikes are fragile without security guarantees. Current crowd-implied odds of 21% for a return to 60 daily arrivals by August 31 align with analyst consensus that the blockade will persist, diverging sharply from sportsbook lines that occasionally offer higher probabilities on short-term geopolitical de-escalation.
Traders must monitor the daily NBC News vessel tracker and IMF PortWatch data for any sustained seven-day average above 60, while watching for Trump’s declared naval blockade announcements or sudden shifts in ceasefire talks. A recent NBC News report confirms that peace negotiations have stalled with minimal progress, meaning the blockade remains the dominant variable; any resolution hinges entirely on whether Iran halts its attacks on ships, a dependency that currently keeps the probability of normal traffic firmly in the minority.
Methodology
This page reviews Strait of Hormuz traffic returns to normal by August 31? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi vs Polymarket, which mirrors the Polymarket order book at 0% fees.
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.
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 Kalshi vs Polymarket. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket 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.
Trade Strait of Hormuz traffic returns to normal by August… on Kalshi vs Polymarket
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