TOTAL VOLUME:
$154.4b
24H VOL:
$245,801,863
24H TRANSACTIONS:
2,984,028,936
OPEN INTEREST:
$1,902,097,102
417,059
Markets across
40,178
events
MATCHED EVENTS:
4,415
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 26, 5:24 PM EST
Polymarket
This market will resolve to "Up" if the Close price for S&P 500 (SPY) on October 26, 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 26, 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. For a standard full trading session, the closing price refers to the Pyth "Close" value of the 1-minute candle corresponding to the final minute of regular trading hours on the primary exchange. If either of the relevant days has no valid Pyth Close value for the 1-minute candle corresponding to the end of regular trading hours on the primary exchange, the market will use the last valid Pyth price achieved during the regular trading hours of the primary exchange as the effective closing price. If no valid Pyth price exists for that trading day due to a system outage, data failure, or other technical disruption, the official closing price published by the primary exchange on which the listed security trades will be used to determine the closing price for that day. Only prices achieved during the regular trading hours of the primary exchange on which the listed security trades (typically 9:30 AM – 4:00 PM ET) will be considered. In the event of a stock split, reverse stock split, or similar corporate action affecting the listed security during the listed time frame, this market will resolve based on split-adjusted prices as displayed on Pyth. The resolution source for this market will be Pyth, specifically the "Close" values for the relevant 1-minute candle available at https://pythdata.app/explore/Equity.US.SPY%2FUSD. Historical 1-minute candles may be accessed by appending a Unix timestamp (seconds) to the Pyth chart URL using the "t=" parameter. Any timestamp within the listed market time frame may be used to view the relevant candle data (e.g., https://pythdata.app/explore/Equity.US.SPY%2FUSD?t=1773432000).
This market will resolve to "Up" if the Close price for S&P 500 (SPY) on October 26, 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 26, 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. For a standard full trading session, the closing price refers to the Pyth "Close" value of the 1-minute candle corresponding to the final minute of regular trading hours on the primary exchange. If either of the relevant days has no valid Pyth Close value for the 1-minute candle corresponding to the end of regular trading hours on the primary exchange, the market will use the last valid Pyth price achieved during the regular trading hours of the primary exchange as the effective closing price. If no valid Pyth price exists for that trading day due to a system outage, data failure, or other technical disruption, the official closing price published by the primary exchange on which the listed security trades will be used to determine the closing price for that day. Only prices achieved during the regular trading hours of the primary exchange on which the listed security trades (typically 9:30 AM – 4:00 PM ET) will be considered. In the event of a stock split, reverse stock split, or similar corporate action affecting the listed security during the listed time frame, this market will resolve based on split-adjusted prices as displayed on Pyth. The resolution source for this market will be Pyth, specifically the "Close" values for the relevant 1-minute candle available at https://pythdata.app/explore/Equity.US.SPY%2FUSD. Historical 1-minute candles may be accessed by appending a Unix timestamp (seconds) to the Pyth chart URL using the "t=" parameter. Any timestamp within the listed market time frame may be used to view the relevant candle data (e.g., https://pythdata.app/explore/Equity.US.SPY%2FUSD?t=1773432000).
Currently, prediction market odds offer a distinct perspective when contrasted with traditional analyst forecasts for the SPY. While analysts often provide point estimates or ranges for potential price movements, this market aggregates the wisdom of the crowd, expressing predictions as probabilities. Discrepancies between the two can highlight areas of disagreement or differing levels of confidence in the market’s future direction. It’s important to note that analyst forecasts are often based on fundamental analysis, while this market reflects a broader range of factors, including sentiment and short-term trading dynamics.
On Polymarket, this market is priced through a continuous double auction, similar to a stock exchange. Traders buy and sell shares representing their belief about the SPY’s direction, and the price of these shares adjusts based on supply and demand. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price reflects the probability of the ‘Yes’ outcome (SPY closing higher) and the ‘No’ outcome (SPY closing lower). Higher demand for ‘Yes’ shares drives up their price, indicating increased confidence in an upward movement, and vice versa. This dynamic pricing mechanism ensures the market reflects the collective intelligence of its participants.
This market resolves around Oct 26, 2026, with the outcome determined by whether the SPY ETF closes higher or lower on that date. The final price will be verified against credible public reporting from established financial news sources. The market will settle to 100% for the outcome that matches the SPY’s closing price and 0% for the opposing outcome. Traders holding shares in the winning outcome will receive a payout equivalent to the final price of their shares, while those holding shares in the losing outcome will receive nothing.
Several signals and events could significantly move this market before Oct 26, 2026. Major economic data releases, such as inflation reports, employment figures, and GDP growth, are likely to influence trader sentiment. Unexpected geopolitical events or shifts in Federal Reserve policy could also trigger substantial price swings. Company earnings reports from large SPY constituents, and any significant news impacting overall market risk appetite, will be closely watched. Furthermore, broad market sentiment and unexpected news headlines can all contribute to volatility in this market.