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S&P 500 (SPX) Opens Up or Down on July 27?
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S&P 500 (SPX) Opens Up or Down on July 27?

Volume:
$19,745

S&P 500 (SPX) Opens Up or Down on July 27?

 - Polymarket

S&P 500 (SPX) Opens Up or Down on July 27? - Polymarket

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Resolved Jul 27, 2026

Closed: Jul 27, 6:37 PM EST

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S&P 500 (SPX) Opens Up or Down on July 27?

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100%
Yes 100¢No 0¢
0.1¢
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$19,745
N/A
N/A
N/A
Settled
Yes
Total markets: 1

Description

This market will resolve to "Up" if the official S&P 500 Index open price for S&P 500 (SPX) on July 27 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading day. This market will resolve to "Down" if the official S&P 500 Index open price for S&P 500 (SPX) on July 27 is lower than the official S&P 500 Index closing price for SPX 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 prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding. If SPX does not trade at all during the regular session, the market will resolve 50-50. If either of the relevant days are shortened (for example, due to a market holiday schedule), the official open/close price published by S&P 500 Index for that shortened session will still be used for resolution. If the previous trading day has no official closing price (for example, due to a trading halt into the market close, system issue, delisting, or other disruption), the market will use the last valid on-exchange trade price of the regular session as the effective closing price. The resolution source for this market is the Wall Street Journal, specifically the Open/Close values published by the WSJ under "Historical Prices". US: https://www.wsj.com/market-data/stocks EMEA: https://www.wsj.com/market-data/stocks/emea ASIA: https://www.wsj.com/market-data/stocks/asia

Polymarket

This market will resolve to "Up" if the official S&P 500 Index open price for S&P 500 (SPX) on July 27 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading day. This market will resolve to "Down" if the official S&P 500 Index open price for S&P 500 (SPX) on July 27 is lower than the official S&P 500 Index closing price for SPX 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 prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding. If SPX does not trade at all during the regular session, the market will resolve 50-50. If either of the relevant days are shortened (for example, due to a market holiday schedule), the official open/close price published by S&P 500 Index for that shortened session will still be used for resolution. If the previous trading day has no official closing price (for example, due to a trading halt into the market close, system issue, delisting, or other disruption), the market will use the last valid on-exchange trade price of the regular session as the effective closing price. The resolution source for this market is the Wall Street Journal, specifically the Open/Close values published by the WSJ under "Historical Prices". US: https://www.wsj.com/market-data/stocks EMEA: https://www.wsj.com/market-data/stocks/emea ASIA: https://www.wsj.com/market-data/stocks/asia

Frequently asked questions

On Polymarket, this dashboard tracks the real-time odds and price history for the S&P 500 open direction market, alongside 24-hour volume of $8,922. It shows how traders on Polymarket are positioning around whether the S&P 500 will open up or down on the specified date. The display updates continuously to reflect the latest betting activity and market sentiment, giving users a clear view of crowd-sourced expectations for this financial indicator.

This market resolves around Jul 27, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result depends on the actual opening direction of the S&P 500 index on that trading session, as observed and reported by major financial news outlets and market data providers. Traders will see the settlement automatically update once the data is confirmed.

Key signals include major economic indicators such as U.S. jobs data, Federal Reserve announcements, or unexpected geopolitical developments that influence investor sentiment. Earnings reports from large S&P 500 constituents, sudden shifts in bond yields, or geopolitical tensions could also sway expectations. Any surprise policy move or market volatility spike in the days leading up to Jul 27, 2026 may cause rapid re-pricing as traders adjust their positions based on new information.