Analytics
The Up side is at 63.5%, up 7.5 points from 56% when the market opened on 24 Oct 2026.
Across the 2 daily closes on record from 24 Oct 2026 to 26 Oct 2026 (1 day in that span have no close), the highest close was 63.5% on 26 Oct 2026 and the lowest 56% on 24 Oct 2026.
$843.29 traded in the last 24 hours. The order book holds $693.64, with a 1.0% gap between the best bid and the best ask. Across the latest 27 trades, $408.96 bought Up and $47.8 bought Down.
The largest Up position is greedymartin with 335 shares; the largest Down position is rtgdfbert with 542.
Trading closes on 26 Oct 2026, tomorrow.
Polymarket prices as of Oct 26, 4:22 AM UTC
The paper ticket needs a verified Yes / No pair, which this market does not have here.
Open in PredictionsDaily closes of the Up price, Polymarket CLOB, 2 points, 24 Oct 2026 – 26 Oct 2026, chart shows 50%–70%
| Observed | Up price |
|---|---|
| 24 Oct 2026 | 56.0% |
| 26 Oct 2026 | 63.5% |
The ten largest positions on Polymarket's public holder list.
| Trader | Outcome | Shares |
|---|---|---|
| rtgdfbert | Down | 541.73 |
| greedymartin | Up | 334.58 |
| PBot-10 | Up | 207.34 |
This market will resolve to "Up" if the official S&P 500 Index open price for S&P 500 (SPX) on October 26 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 October 26 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
Official listing: polymarket.com/event/spx-opens-up-or-down-on-october-26-2026
| grasstoucher69 |
| Up |
| 150 |
| Watchful-Softening | Down | 100 |
| KOMZY | Down | 60 |
| anon332 | Up | 30.28 |
| Rectangular-Dynasty | Up | 29.99 |
| ct1989 | Down | 22.73 |
| a5533 | Down | 19.99 |
Open a trader’s name to inspect the wallet’s available P&L, positions and recorded trades, with source dates and coverage. A large position alone does not establish a winning track record.
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