Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| July 24 | 100% |
| August 4 | 100% |
| August 19 | 10% |
| August 25 | 10% |
| August 12 | 8% |
| August 13 | 8% |
| August 14 | 8% |
| August 26 | 8% |
| August 27 | 8% |
| August 16 | 7% |
| August 18 | 7% |
| August 20 | 7% |
| August 23 | 7% |
| August 28 | 7% |
| August 29 | 7% |
| August 30 | 7% |
| August 31 | 7% |
| August 15 | 6% |
| August 17 | 6% |
| August 22 | 6% |
| August 9 | 5% |
| August 10 | 5% |
| August 24 | 5% |
| August 11 | 4% |
| August 21 | 4% |
| August 5 | 1% |
| August 8 | 1% |
| July 25 | 0% |
| July 26 | 0% |
| July 27 | 0% |
| July 28 | 0% |
| July 29 | 0% |
| July 30 | 0% |
| July 31 | 0% |
| August 1 | 0% |
| August 2 | 0% |
| August 3 | 0% |
| August 6 | 0% |
| August 7 | 0% |
Market context
Polymarket prices this contract at **100% YES** on USDC collateral on Polygon, which means the market is effectively treating a qualifying Houthi strike or seizure of a commercial ship as a near-certainty before settlement. Because the contract is resolved by conditional tokens, the real question for a user is not whether shipping risk exists in general, but whether a **qualifying incident** occurs before 31 August 2026 under the market’s narrow rules.
That 100% reading sits against a record of repeated Houthi maritime attacks in the Red Sea and Bab el-Mandeb. Reuters reported on 22 July that the Houthis had claimed missile and drone strikes on two Saudi oil tankers, while AP and other outlets said the group had also announced a blockade on Saudi-linked shipping and claimed to have forced vessels to reroute[9][1][2]. Earlier Houthi campaigns since late 2023 have included drone and missile attacks on commercial vessels, and reporting has noted that the group has also used boarding tactics in some cases[4][19]. For traders, the key framing is that past behaviour shows capability and intent, but this market only resolves on a direct impact or seizure of a commercial ship, not on intercepted launches or military targets.
Catalysts to watch are Houthi statements, shipping advisories, and any change in transit patterns through Bab el-Mandeb. Reuters said on 27 July that Red Sea traffic fell after the latest Houthi attacks, while a separate Reuters report on 16 July said sources believed the group had prepared missiles and drones near the strait if ordered to escalate[5][15]. Any fresh claims of a blockade, new target lists, or confirmed incidents involving merchant vessels would matter more here than broad regional tensions, because settlement depends on whether the reported event fits the contract’s specific definitions.
Methodology
This page reviews Houthis successfully target shipping on 2026? 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
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.
UK Frequently Asked Questions
- 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.
- 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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