Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) 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 |
|---|---|
| $725 | 100% |
| $730 | 99% |
| $720 | 99% |
| $715 | 99% |
| $735 | 91% |
| $740 | 9% |
| $745 | 2% |
| $765 | 1% |
| $760 | 1% |
| $750 | 1% |
| $755 | 0% |
Market context
The S&P 500 exchange-traded fund (SPY) will close on 27 July 2026, and this market asks whether its closing price will exceed a specific threshold. The 1% crowd probability suggests the threshold is substantially above the current trading range, reflecting either a historically extreme rally or a blank-cheque settlement level. SPY tracks the 500 largest US-listed companies and typically moves within 2–3% daily under normal conditions; moves beyond that require significant macroeconomic shifts, earnings surprises, or policy announcements.
Comparable historical precedent comes from the 2008 financial crisis and the March 2020 pandemic sell-off, when SPY experienced single-day swings exceeding 9%. Outside acute crises, daily moves above 5% occur roughly once per year. The current 1% probability aligns with tail-risk scenarios: a major geopolitical shock, unexpected Federal Reserve action, or a severe earnings recession announced within hours of market close. Without knowing the exact threshold, traders should assess whether the implied strike price sits within normal volatility bands or requires an outlier event.
Key catalysts through late July include the Federal Open Market Committee decision (typically mid-month), second-quarter earnings reports from mega-cap technology firms, and any unscheduled economic data releases. The US Treasury yield curve and inflation expectations will drive sentiment in the final trading days. According to Bloomberg reporting in early 2026, equity volatility has remained subdued relative to historical averages, suggesting the crowd's 1% assessment reflects genuine rarity rather than mispricing of routine market movement.
Methodology
Sports-specific comparison page for S&P 500 (SPY) closes above … on July 27?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
Trade S&P 500 (SPY) closes above … on July 27? on Sport Prediction
Live order book, 0% fees, USDC settlement in seconds.
Open live market →