Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legal in California) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live 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 | 9% |
| August 12 | 8% |
| August 13 | 8% |
| August 14 | 8% |
| August 16 | 8% |
| August 26 | 8% |
| August 18 | 7% |
| August 20 | 7% |
| August 23 | 7% |
| August 27 | 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
The real-world event is whether Houthi forces carry out a qualifying strike on, or seize control of, a commercial ship before the market’s end date. The crowd’s 100% YES pricing suggests participants see the base rate as extremely high, but the market rules are narrow: intercepted missiles or drones do not count unless the vessel is directly hit, and attacks on military vessels are excluded.
That reading is consistent with the recent Red Sea pattern. Reuters reported on 27 July that Houthi attacks on Saudi-linked shipping and oil infrastructure had already reduced Bab el-Mandeb traffic, while earlier reports said the group had resumed maritime threats after announcing a blockade of Saudi-linked shipping[4]. AP, Reuters and other outlets also documented previous Houthi attacks on tankers such as *Encelia* and *Layla*, as well as a longer history of drone, missile and boarding tactics against commercial vessels[1][5][13]. For traders, the comparable cases matter because the market settles on a precise factual threshold, not on general intimidation or indirect disruption.
The main catalysts to watch are Houthi military statements, shipping advisories from maritime security groups, and any fresh escalation around Saudi ports or Bab el-Mandeb transit lanes. Reuters reported that a source close to the Houthis said they had completed preparations to attack shipping near Bab el-Mandeb, and CNBC said the Joint Maritime Information Center warned of elevated risk to ships in the southern Red Sea[14][15]. From a market-access angle, German GlüStV rules can materially affect whether a user can reach this contract from Germany, while US CFTC reach means US-facing participation remains sensitive to venue structure and jurisdiction. “No-KYC up to $1,500” typically means a user can trade up to that cumulative exposure without identity verification, which is relevant here because a 100% YES price leaves little room for incremental upside and makes small, low-friction positions easier to place than larger ones.
Methodology
This overview of Houthis successfully target shipping on 2026? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Is Kalshi Legal in California has a different geo footprint.
- What happens during a tax audit?
- You're responsible for documenting your trades. Is Kalshi Legal in California exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legal in California would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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