Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
82% | 18% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
82% | 18% | 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 is currently closed, with commercial shipping suspended after a brief reopening and over 150 vessels stranded. Traffic has plummeted to near zero, far below the normal daily average of roughly 60 ships, forcing reroutes via the Cape of Good Hope that add up to 14 extra transit days. Despite this stark reality, the prediction market on Polymarket prices a “Yes” outcome at 83% conditional tokens, implying traders expect a swift return to normalcy by December 2026.
Historically, similar geopolitical standoffs in the region have seen traffic recover only after high-level diplomatic breakthroughs. The June 17 US–Iran agreement explicitly guarantees immediate commercial navigation and requires the US to lift its naval blockade by July 19, with Iran pledging to restore pre-war traffic levels within the same window. This memorandum of understanding frames the current 83% probability, as the settlement hinges on whether Iran fulfils its commitment without imposing tolls beyond the agreed 60-day toll-free period.
Traders must monitor the July 19 blockade-lifting deadline and any announcements regarding toll re-imposition, as these are the primary catalysts for traffic normalisation. Recent NBC News reporting confirms that President Trump has stipulated the strait’s reopening as a prerequisite for any ceasefire, yet peace negotiations show minimal progress. If the US fails to lift the blockade or Iran resumes tolls, the 7-day moving average of 60 arrivals required for a “Yes” resolution may not materialise before the settlement window closes.
Methodology
This page reviews Strait of Hormuz traffic returns to normal by December 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 PolyGram, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
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.
- 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.
- 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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