PolymarketClosedCheck availabilityNo KYC2% feeVerified resolution dataFairly calibratedThis market resolved: Up
Resolved: Aug 25, 2026, 8:17 PM
Provider-verified resolution
CoinRithm has provider-backed winner and settlement-time evidence for this market.
Data quality warningStale data
Data as of Aug 25, 2026, 8:00 PM UTC · policy pm-quality-3
Current implied probability
Up 100%
Market quality
≤49 / 100
Low quality24h Volume
$15
Liquidity
$30.5K
High liquidityBid / Ask
99.9% / 100.0%
Spread
0.1 pt
Tight spreadComments
0
Market data
Updated 7 hours ago
StaleAug 24, 26, 8:15 PMAug 25, 26, 8:00 PM
Trends
100%
0%
Rules
This market will resolve to "Up" if the open price for S&P 500 (SPY) on August 25, 2026 is higher than the closing price for SPY on the most recent prior trading day.
- This market will resolve to "Down" if the open price for S&P 500 (SPY) on August 25, 2026 is lower than the closing price for 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 prices are exactly equal, this market will resolve 50-50.
- 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.
