Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| July 24 | 100% |
| July 25 | 100% |
| July 31 | 100% |
| August 15 | 100% |
| August 31 | 100% |
| July 23 | 11% |
Market context
The Houthi movement has conducted hundreds of attacks on commercial shipping in the Red Sea and Gulf of Aden since November 2023, primarily using anti-ship missiles and drones. However, the distinction between attempted strikes and successful kinetic impacts on vessels—let alone seizures of control—remains narrow. Most Houthi projectiles have either been intercepted by naval escorts or missed their targets entirely. The market's 1% implied probability reflects the substantial gap between attack frequency and the specific outcome of a direct hit or forcible boarding that causes material damage or loss of vessel control.
Historical precedent suggests successful seizures of commercial vessels by non-state actors remain rare in modern maritime operations. The Somali piracy surge of 2008–2012 saw dozens of successful boardings, but that occurred in a region with minimal naval presence. The Red Sea corridor now hosts coordinated international naval task forces, including US, UK, and allied warships, which have substantially degraded Houthi strike success rates. Intelligence assessments indicate the group's technical capability for precision targeting remains limited, and their drone and missile inventories face attrition from coalition air strikes.
Traders should monitor Houthi statements regarding operational tempo, which typically precede campaign escalations, alongside shipping insurance premium movements and reported near-misses. Recent reporting from maritime security firms in January 2025 documented continued attack attempts but no successful direct impacts on commercial hulls. Any significant shift in US or allied naval posture in the region—such as withdrawal of escort vessels or ceasefire agreements—would materially alter the probability calculus for this contract through August 2026.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.
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
- 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.
- 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.
- 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.
Trade Houthis successfully target shipping by 2026? on Best Prediction Markets
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