Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump 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% |
| $720 | 99% |
| $715 | 99% |
| $730 | 98% |
| $735 | 90% |
| $740 | 15% |
| $765 | 1% |
| $760 | 1% |
| $750 | 1% |
| $745 | 1% |
| $755 | 0% |
Market context
This market tracks whether the S&P 500 exchange-traded fund (SPY) will close above a specified price level on 27 July 2026. The settlement window closes at 20:00 UTC that day, capturing the final trading price after US market hours. The 0% crowd probability suggests traders are pricing in either an extremely low likelihood of the index reaching the threshold, or insufficient liquidity and participation to establish a meaningful price discovery mechanism at present.
Historical volatility in equity indices during mid-summer months typically reflects a combination of corporate earnings releases, Federal Reserve communications, and macroeconomic data points. July 2026 will fall within the second half of the year, a period when markets often reassess growth forecasts and inflation expectations. Previous instances of sharp equity moves in late July have frequently coincided with unexpected employment figures or central bank policy signals rather than pre-scheduled events, making the specific catalyst for this market's outcome difficult to isolate months in advance.
Traders monitoring this market should track scheduled Federal Reserve communications, second-quarter earnings guidance revisions, and any unexpected geopolitical developments that could shift risk appetite. The absence of a major political convention or campaign finance disclosure deadline in late July 2026 means equity movement will likely depend on standard macroeconomic drivers rather than the political calendar. Market participants should watch financial news outlets including Bloomberg and Reuters for any material economic data releases scheduled within the settlement window.
Methodology
This page tracks S&P 500 (SPY) closes above … on July 27? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.
Resolution & payout
For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.
FAQ
- How accurate are political prediction markets?
- Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.
- What resolution source is used for elections?
- Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.
- How fast do political markets react to news?
- High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.
- Why do Polymarket and Kalshi differ on elections?
- Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.
- Which political events have the biggest volume?
- US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.
Trade S&P 500 (SPY) closes above … on July 27? on Trump Prediction
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