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% |
| August 4 | 100% |
| August 19 | 11% |
| August 25 | 10% |
| August 16 | 9% |
| August 12 | 8% |
| August 13 | 8% |
| August 14 | 8% |
| August 26 | 8% |
| August 31 | 8% |
| August 18 | 7% |
| August 20 | 7% |
| August 23 | 7% |
| August 27 | 7% |
| August 28 | 7% |
| August 29 | 7% |
| August 30 | 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
The immediate event is whether Houthi forces carry out a direct kinetic strike on, or seize control of, a commercial ship before the settlement deadline; at present, the crowd is pricing that outcome at **100% YES**, which is far stronger than the more cautious tone in recent maritime security notices. That gap matters because the contract excludes intercepted missiles and attacks on military vessels, so traders are really judging the probability of a *successful* commercial-ship hit rather than a general threat to Red Sea traffic.[18][2]
The main historical frame is that the Houthis have already shown both intent and capability in the Bab el-Mandeb/Red Sea corridor. Reuters reported that they claimed missile and drone strikes on two Saudi oil tankers in July, while AP and Al Jazeera said the group had also forced vessels to reroute under its blockade rhetoric; UNAV’s review notes that their tactics have included boarding and taking control of ships, alongside repeated missile and drone assaults on commercial traffic.[12][5][7][2] Against that backdrop, a 100% market price implies either very strong confidence that attacks will continue or that at least one qualifying incident is treated as near-certain. For a cross-platform read, that is likely well above any sportsbook or analyst-style assessment that still allows for interception, diversion, or inaction over the remaining horizon.
The catalysts to watch are Houthi maritime statements, any fresh Reuters/AP dispatches on Red Sea shipping, and JMIC or Lloyd’s List updates on threat levels and routing changes. Reuters also reported in mid-July that Iran had asked the Houthis to stand ready to close the Red Sea gateway if U.S. strikes hit Iranian power infrastructure, suggesting escalation risk can rise quickly from broader regional events rather than from shipping itself.[17] A new blockade notice, a claim against a Saudi-linked tanker, or evidence of missiles and drones being pre-positioned near Bab el-Mandeb would be the clearest triggers for re-pricing.[4][18]
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
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.
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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets 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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