Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Market UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| Both Teams to Score | 100% |
| 1st Half O/U 0.5 | 100% |
| FC Mito Holly Hock O/U 0.5 | 100% |
| Gamba Ōsaka O/U 0.5 | 100% |
| FC Mito Holly Hock 1st Half O/U 0.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| Gamba Ōsaka 2nd Half O/U 0.5 | 100% |
| FC Mito Holly Hock (-1.5) | 0% |
| Gamba Ōsaka (-1.5) | 0% |
| FC Mito Holly Hock (-2.5) | 0% |
| Gamba Ōsaka (-2.5) | 0% |
| O/U 2.5 | 0% |
| O/U 3.5 | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| FC Mito Holly Hock O/U 1.5 | 0% |
| FC Mito Holly Hock O/U 2.5 | 0% |
| Gamba Ōsaka O/U 1.5 | 0% |
| Gamba Ōsaka O/U 2.5 | 0% |
| FC Mito Holly Hock 1st Half O/U 1.5 | 0% |
| Gamba Ōsaka 1st Half O/U 0.5 | 0% |
| Gamba Ōsaka 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 1.5 | 0% |
| 2nd Half O/U 2.5 | 0% |
| FC Mito Holly Hock 2nd Half O/U 0.5 | 0% |
| FC Mito Holly Hock 2nd Half O/U 1.5 | 0% |
| Gamba Ōsaka 2nd Half O/U 1.5 | 0% |
Market context
FC Mito Holly Hock will face Gamba Ōsaka in Japan's top-flight J. League on 15 August 2026. This market invites traders to purchase YES or NO shares on whether additional markets—beyond standard match outcomes—will be created for the fixture. A YES share pays out if the platform opens supplementary betting options such as first-goal scorer, total corner counts, or player-specific performance props. A NO share settles if no such markets materialise before the settlement window closes on 15 August at 09:00 UTC.
Gamba Ōsaka's historical prominence in the J. League provides context for market depth expectations. The club has consistently attracted deeper liquidity and broader market coverage than lower-profile opponents; when Gamba hosts or visits, platforms typically expand their offering beyond basic match bets. Holly Hock, by contrast, operates as a smaller franchise with less consistent supplementary market coverage. The 0% implied probability reflects this asymmetry—traders are currently pricing near-zero likelihood that additional markets will open, suggesting either low platform prioritisation for this fixture or confidence that standard markets alone will suffice.
Key variables include fixture scheduling prominence and platform resource allocation. Holly Hock's recent form, injury updates to either squad, and any late-season playoff implications could influence whether the platform deems expanded markets commercially worthwhile. Traders should monitor official J. League fixture confirmations and any platform announcements regarding market expansion timelines, typically released 7–10 days before match day.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
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.
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.
- 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.
- 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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