
Prediction market · Polymarket
This market will resolve to "Up" if the official S&P 500 Index closing price for S&P 500 (SPX) on Monday, February 23, 2026 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 closing price for S&P 500 (SPX) on Monday, February 23, 2026 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 specified closing 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 closing price published by S&P 500 Index for that shortened session will still be used for resolution. If either of the relevant days have 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 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
Ticker
spx-up-or-down-on-february-23-2026
Volume
9.8K
24h volume
1.2K
1w volume
9.4K
Open interest
0
Liquidity
21.5K
Liquidity CLOB
21.5K
Start
Feb 20, 2026
End
Feb 23, 2026
Status
Active
Access
Restricted
Created
Feb 23, 2026
Resolution source
https://www.wsj.com/market-data/stocks
Event ID
218926
Slug
spx-up-or-down-on-february-23-2026
Markets
1
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"id": "218926",
"ticker": "spx-up-or-down-on-february-23-2026",
"slug": "spx-up-or-down-on-february-23-2026",
"title": "S&P 500 (SPX) Up or Down on February 23?",
"description": "This market will resolve to \"Up\" if the official S&P 500 Index closing price for S&P 500 (SPX) on Monday, February 23, 2026 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading day.\n\nThis market will resolve to \"Down\" if the official S&P 500 Index closing price for S&P 500 (SPX) on Monday, February 23, 2026 is lower than the official S&P 500 Index closing price for SPX on the most recent prior trading day.\n\nE.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.\n\nIf the two specified closing prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding.\n\nIf SPX does not trade at all during the regular session, the market will resolve 50-50.\n\nIf either of the relevant days are shortened (for example, due to a market holiday schedule), the official closing price published by S&P 500 Index for that shortened session will still be used for resolution.\n\nIf either of the relevant days have 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.\n\nThe resolution source for this market is the Wall Street Journal, specifically the Close values published by the WSJ under \"Historical Prices\".\n\nUS: https://www.wsj.com/market-data/stocks\nEMEA: https://www.wsj.com/market-data/stocks/emea \nASIA: https://www.wsj.com/market-data/stocks/asia",
"resolutionSource": "https://www.wsj.com/market-data/stocks",
"startDate": "2026-02-20T13:05:18.610911Z",
"creationDate": "2026-02-23T14:30:00Z",
"endDate": "2026-02-23T21:00:00Z",
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"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/s-and-p-500-1e40af6979.png",
"active": true,
"closed": false,
"archived": false,
"new": false,
"featured": false,
"restricted": true,
"liquidity": 21498.2451,
"volume": 9813.570616,
"openInterest": 0,
"createdAt": "2026-02-20T13:00:01.287244Z",
"updatedAt": "2026-02-22T05:40:04.291619Z",
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{
"id": "1401987",
"question": "S&P 500 (SPX) Up or Down on February 23?",
"conditionId": "0x32059569d421e95583f8be29fcf2871e8874df247214bc8bc2ae4bee3d811c6c",
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"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/s-and-p-500-1e40af6979.png",
"description": "This market will resolve to \"Up\" if the official S&P 500 Index closing price for S&P 500 (SPX) on Monday, February 23, 2026 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading day.\n\nThis market will resolve to \"Down\" if the official S&P 500 Index closing price for S&P 500 (SPX) on Monday, February 23, 2026 is lower than the official S&P 500 Index closing price for SPX on the most recent prior trading day.\n\nE.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.\n\nIf the two specified closing prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding.\n\nIf SPX does not trade at all during the regular session, the market will resolve 50-50.\n\nIf either of the relevant days are shortened (for example, due to a market holiday schedule), the official closing price published by S&P 500 Index for that shortened session will still be used for resolution.\n\nIf either of the relevant days have 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.\n\nThe resolution source for this market is the Wall Street Journal, specifically the Close values published by the WSJ under \"Historical Prices\".\n\nUS: https://www.wsj.com/market-data/stocks\nEMEA: https://www.wsj.com/market-data/stocks/emea \nASIA: https://www.wsj.com/market-data/stocks/asia",
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"outcomePrices": "[\"0.585\", \"0.415\"]",
"volume": "9813.570616",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-02-20T13:00:02.484409Z",
"updatedAt": "2026-02-22T05:39:10.023964Z",
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"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
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"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
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"endDateIso": "2026-02-23",
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"umaBond": "500",
"umaReward": "2",
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"volumeClob": 9813.570616,
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"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-02-20T13:02:30Z",
"cyom": false,
"competitive": 0.9928268261808434,
"pagerDutyNotificationEnabled": false,
"approved": true,
"clobRewards": [
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"conditionId": "0x32059569d421e95583f8be29fcf2871e8874df247214bc8bc2ae4bee3d811c6c",
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"rewardsAmount": 0,
"rewardsDailyRate": 100,
"startDate": "2026-02-20",
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"rewardsMinSize": 200,
"rewardsMaxSpread": 5.5,
"spread": 0.01,
"oneDayPriceChange": 0.01,
"lastTradePrice": 0.59,
"bestBid": 0.58,
"bestAsk": 0.59,
"automaticallyActive": true,
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"manualActivation": false,
"negRiskOther": false,
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-02-20T13:00:15.445998Z",
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"series": [
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"id": "10383",
"ticker": "spx-daily-up-or-down",
"slug": "spx-daily-up-or-down",
"title": "SPX Daily Up or Down",
"seriesType": "single",
"recurrence": "daily",
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"tags": [
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"label": "Hide From New",
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"publishedAt": "2023-11-02 21:22:21.615+00",
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"startTime": "2026-02-23T14:30:00Z",
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