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| Outcome | Chance | 24h | 1 week | Bid · Ask | 24h volume | Ends |
|---|---|---|---|---|---|---|
| Yes | 100% | +48 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 149d | Incognitoo | S&P 500 (SPX) Opens Up or Down on May 27? | SellUp>99¢ | $2,061 | −$2 −0.1% | — |
| 149d | baba14433 fills | S&P 500 (SPX) Opens Up or Down on May 27? | BuyUp>99¢ | $23,334 | +$95 +0.4% | 4 |
| 149d |  haerder | S&P 500 (SPX) Opens Up or Down on May 27? | BuyUp>99¢ | $1,291 | +$1 +0.1% | 4 |
| 149d |  NotMasterFan | S&P 500 (SPX) Opens Up or Down on May 27? | BuyUp>99¢ | $3,497 | +$4 +0.1% | 4 |
| 149d | koinobu | S&P 500 (SPX) Opens Up or Down on May 27? | BuyUp99¢ → 100¢ | $1,307 | +$9 +0.7% | 4 |
| 149d |  Jebury-Dracula | S&P 500 (SPX) Opens Up or Down on May 27? | BuyUp99¢ → 100¢ | $1,116 | +$8 +0.7% | 4 |
| 149d |  CoinTrick | S&P 500 (SPX) Opens Up or Down on May 27? | BuyUp>99¢ | $4,995 | +$5 +0.1% | 4 |
| 149d |  greedymartin | S&P 500 (SPX) Opens Up or Down on May 27? | BuyDown28¢ → 0¢ | $2,387 | −$2,387 −100% | 16 |
| 149d | twerk4hv2 fills | S&P 500 (SPX) Opens Up or Down on May 27? | BuyUp99¢ → 100¢ | $11,587 | +$66 +0.6% | 4 |
| 149d | believeromeo | S&P 500 (SPX) Opens Up or Down on May 27? | SellUp94¢ → 100¢ | $1,015 | −$59 −5.8% | — |
| 149d | anon.1980.1233 fills | S&P 500 (SPX) Opens Up or Down on May 27? | BuyUp99¢ → 100¢ | $4,058 | +$42 +1.0% | 4 |
| 149d | GROUPJETSOLUTIONSS.R.O. | S&P 500 (SPX) Opens Up or Down on May 27? | BuyUp95¢ → 100¢ | $1,201 | +$69 +5.7% | 5 |
ytho10,000 shares
4510.btc1,800 sharesThis market will resolve to "Up" if the official S&P 500 Index open price for S&P 500 (SPX) on May 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 May 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
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%.