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| Outcome | Chance | 24h | 1 week | Bid · Ask | 24h volume | Ends |
|---|---|---|---|---|---|---|
| Yes | 100% | +53 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 269d | flowknows | S&P 500 (SPX) Opens Up or Down on January 27? | SellUp>99¢ | $3,552 | −$4 −0.1% | — |
| 269d | weather.fanatic | S&P 500 (SPX) Opens Up or Down on January 27? | SellUp>99¢ | $2,340 | −$2 −0.1% | — |
| 269d | CitadelAdvisorsLLC | S&P 500 (SPX) Opens Up or Down on January 27? | SellUp>99¢ | $2,029 | −$2 −0.1% | — |
| 269d |  VdeVolsa | S&P 500 (SPX) Opens Up or Down on January 27? | BuyUp>99¢ | $28,393 | +$28 +0.1% | 4 |
| 269d |  CoinTrick | S&P 500 (SPX) Opens Up or Down on January 27? | BuyUp99¢ → 100¢ | $9,057 | +$129 +1.4% | 4 |
| 269d |  50StackSteve | S&P 500 (SPX) Opens Up or Down on January 27? | SellUp97¢ → 100¢ | $1,448 | −$45 −3.1% | — |
| 269d |  coinlaundry5 fills | S&P 500 (SPX) Opens Up or Down on January 27? | BuyUp99¢ → 100¢ | $10,337 | +$153 +1.5% | 4 |
| 269d | flowknows | S&P 500 (SPX) Opens Up or Down on January 27? | BuyUp92¢ → 100¢ | $3,273 | +$283 +8.6% | 6 |
| 269d | Alarming-Neon | S&P 500 (SPX) Opens Up or Down on January 27? | BuyUp90¢ → 100¢ | $1,344 | +$156 +12% | 7 |
| 269d | cryptothan | S&P 500 (SPX) Opens Up or Down on January 27? | SellDown15¢ → 0¢ | $1,643 | +$1,643 +100% | — |
| 269d | Unselfish-Dress | S&P 500 (SPX) Opens Up or Down on January 27? | BuyUp80¢ → 100¢ | $1,433 | +$359 +25% | 9 |
| 270d | fdger456 | S&P 500 (SPX) Opens Up or Down on January 27? | BuyDown38¢ → 0¢ | $1,338 | −$1,338 −100% | 13 |
romnz20031,200 shares
icpdao12341,200 sharesThis market will resolve to "Up" if the official S&P 500 Index open price for S&P 500 (SPX) on January 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 January 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%.