Loading your workspacePreparing the page and its market data.
Loading the chart…
| Outcome | Chance | 24h | 1 week | Bid · Ask | 24h volume | Ends |
|---|---|---|---|---|---|---|
| Yes | 100% | +45 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 163d |  Benevento | S&P 500 (SPX) Opens Up or Down on May 13? | SellUp>99¢ | $2,373 | −$2 −0.1% | — |
| 163d | anon.1980.123 | S&P 500 (SPX) Opens Up or Down on May 13? | SellUp>99¢ | $4,378 | −$4 −0.1% | — |
| 163d | copyb3t | S&P 500 (SPX) Opens Up or Down on May 13? | SellUp>99¢ | $1,530 | −$2 −0.1% | — |
| 163d |  Jebury-Dracula | S&P 500 (SPX) Opens Up or Down on May 13? | BuyUp99¢ → 100¢ | $1,158 | +$8 +0.7% | 4 |
| 163d |  CoinTrick | S&P 500 (SPX) Opens Up or Down on May 13? | BuyUp99¢ → 100¢ | $4,936 | +$64 +1.3% | 4 |
| 163d | anon.1980.1232 fills | S&P 500 (SPX) Opens Up or Down on May 13? | BuyUp96¢ → 100¢ | $2,767 | +$115 +4.2% | 5 |
| 163d |  Shakeshilly | S&P 500 (SPX) Opens Up or Down on May 13? | SellUp95¢ → 100¢ | $1,036 | −$55 −5.3% | — |
| 163d | Shakeshilly2 fills | S&P 500 (SPX) Opens Up or Down on May 13? | BuyUp82¢ → 100¢ | $3,468 | +$772 +22% | 9 |
| 163d |  greedymartin | S&P 500 (SPX) Opens Up or Down on May 13? | SellUp81¢ → 100¢ | $1,814 | −$426 −23% | — |
ytho1,160 sharesThis market will resolve to "Up" if the official S&P 500 Index open price for S&P 500 (SPX) on May 13 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 May 13 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
Sources: Polymarket's Gamma API, its CLOB price history and its Data API, read every two minutes. Prices are each outcome's Yes price, which is the market's probability: 100¢ for Yes means the market gives it about 100%.