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 |
|---|---|
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| 1st Half O/U 0.5 | 100% |
| CA Mineiro O/U 0.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| 2nd Half O/U 1.5 | 100% |
| CA Mineiro (-1.5) | 99% |
| CA Mineiro 1st Half O/U 0.5 | 99% |
| CA Mineiro 2nd Half O/U 0.5 | 99% |
| CA Mineiro 2nd Half O/U 1.5 | 99% |
| CA Mineiro O/U 1.5 | 98% |
| CA Mineiro O/U 2.5 | 98% |
| CA Mineiro (-2.5) | 88% |
| Both Teams to Score in Second Half | 51% |
| 2nd Half O/U 2.5 | 50% |
| Grêmio FBPA 2nd Half O/U 0.5 | 50% |
| Grêmio FBPA 2nd Half O/U 1.5 | 50% |
| O/U 3.5 | 38% |
| Grêmio FBPA O/U 2.5 | 25% |
| Grêmio FBPA O/U 0.5 | 17% |
| Both Teams to Score | 14% |
| O/U 4.5 | 7% |
| O/U 5.5 | 1% |
| Grêmio FBPA O/U 1.5 | 1% |
| Grêmio FBPA 1st Half O/U 1.5 | 1% |
| Grêmio FBPA (-1.5) | 0% |
| Grêmio FBPA (-2.5) | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| CA Mineiro 1st Half O/U 1.5 | 0% |
| Grêmio FBPA 1st Half O/U 0.5 | 0% |
Market context
Atlético Mineiro will face Grêmio FBPA in a Série A fixture on 15 August at 3:30 PM ET, with Polymarket pricing the proposition of additional markets materialising for this match at 99% YES in USDC on Polygon. The settlement hinges on whether secondary conditional tokens—beyond standard match outcome contracts—become available for traders before the 16 August 19:00 UTC deadline. This reflects the platform's track record of expanding market depth for high-liquidity fixtures in Brazil's top division, where fixture scheduling and broadcaster coverage typically drive derivative market creation.
Historical precedent suggests Polymarket has consistently opened supplementary markets (player performance, corner counts, card distributions) for Série A encounters involving established clubs like Atlético Mineiro and Grêmio, particularly when matches fall within prime European trading hours. The 99% probability reflects both the operational norm and the administrative lead time required to deploy conditional tokens on Polygon before settlement. Comparable fixtures from the 2024 season saw additional markets launch within 48 hours of initial match announcement, though timing varies with Polymarket's liquidity management priorities.
The catalyst remains Polymarket's internal decision to allocate engineering resources to this specific fixture. No recent announcements from the platform indicate delays or resource constraints affecting Série A coverage. Traders should monitor Polymarket's official market feed and Polygon transaction activity on 15–16 August for conditional token deployment signals, as the settlement window compresses significantly in the final hours before the 19:00 UTC cut-off.
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 PolyGram, which mirrors the Polymarket order book directly.
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
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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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