PolymarketCheck availabilityNo KYC2% feeVerified resolution dataFairly calibratedCurrent implied probabilityUp 50.5%
Market quality
76 / 100
High quality24h Volume
$8.7K
Liquidity
$16.3K
Medium liquidityBid / Ask
50.0% / 51.0%
Spread
1.0 pt
Tight spreadMarket data
Updated 16 minutes ago
Jul 27, 26, 2:26 PMJul 28, 26, 8:00 PM
Trends
Paper funds only — no real moneyNot financial advice
Selected outcome
Up51%
Volume trend
$8.7kJul 272d of dataJul 28
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This market will resolve to "Up" if the Close price for S&P 500 (SPY) on July 28, 2026 is higher than the Close price for S&P 500 (SPY) on the most recent prior trading day.
- This market will resolve to "Down" if the Close price for S&P 500 (SPY) on July 28, 2026 is lower than the Close price for S&P 500 (SPY) on the most recent prior trading day.
- E.g., ordinarily, a market on Monday would refer to the previous Friday for its most recent closing price, unless that Friday were a market holiday, in which case it would refer to Thursday, or the next most recent trading day.
- If the two specified closing prices are exactly equal, this market will resolve 50-50.
- Closing prices will be used exactly as published by Pyth, without rounding.
- If S&P 500 (SPY) does not trade at all during the regular session, the market will resolve 50-50.