PolymarketClosedCheck availabilityNo KYCVerified resolution dataWell calibratedThis market resolved: Up
Resolved: Oct 27, 2026, 11:01 PM
Provider-verified resolution
CoinRithm has provider-backed winner and settlement-time evidence for this market.
Data quality warningStale data
Data as of Oct 28, 2026, 4:24 AM UTC · policy pm-quality-4
Probability Timeline
Up100%
Down0%
UpWon
Before close: 100% ·
DownLost
Before close: 0% ·
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PolymarketRules
This market will resolve to "Up" if the Close price for S&P 500 (SPY) on October 27, 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 October 27, 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.
