{"$schema":"https://gamma-api.polymarket.com/schemas/Market.json","id":"4436899","question":"S&P 500 (SPX) Opens Up or Down on September 11?","conditionId":"0x260107c37cd7f41136608dd9b2a00aeee6f34d8d023b43c532ad5b472f52b947","slug":"spx-opens-up-or-down-on-september-11-2026","resolutionSource":"https://www.wsj.com/market-data/stocks","endDate":"2026-09-11T20:00:00Z","liquidity":"16921.33831","startDate":"2026-09-10T12:01:01Z","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/s-and-p-500-1e40af6979.png","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 open price for S&P 500 (SPX) on September 11 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 open price for S&P 500 (SPX) on September 11 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 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 open/close price published by S&P 500 Index for that shortened session will still be used for resolution.\n\nIf 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.\n\nThe resolution source for this market is the Wall Street Journal, specifically the Open/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","outcomes":"[\"Up\", \"Down\"]","outcomePrices":"[\"0.9995\", \"0.0005\"]","volume":"14700.181890999997","active":true,"closed":false,"marketMakerAddress":"","createdAt":"2026-09-10T12:00:51.26124Z","updatedAt":"2026-09-11T20:48:44.125871Z","new":false,"featured":false,"archived":false,"resolvedBy":"0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7","restricted":true,"questionID":"0x79f8a26dfa09fdd9e4780630ef3abb8cef609fbc32fecd2413c5b511f1e10b03","enableOrderBook":true,"orderPriceMinTickSize":0.001,"orderMinSize":5,"umaResolutionStatus":"proposed","volumeNum":14700.181890999997,"liquidityNum":16921.33831,"endDateIso":"2026-09-11","startDateIso":"2026-09-10","hasReviewedDates":true,"volume24hr":14700.181890999998,"volume1wk":14700.181890999998,"volume1mo":14700.181890999998,"volume1yr":14700.181890999998,"gameStartTime":"2026-09-10 21:00:00+00","clobTokenIds":"[\"64020800267607093848031508154323433097640865786581082112114641988540238068228\", \"12575801185136583823877523385956555279070449242945575815686474817827800574686\"]","comboStatus":"disabled","umaBond":"250","umaReward":"0.6","volume24hrClob":14700.181890999998,"volume1wkClob":14700.181890999998,"volume1moClob":14700.181890999998,"volume1yrClob":14700.181890999998,"volumeClob":14700.181890999997,"liquidityClob":16921.33831,"makerBaseFee":1000,"takerBaseFee":1000,"acceptingOrders":true,"negRisk":false,"ready":false,"funded":false,"acceptingOrdersTimestamp":"2026-09-10T12:01:01Z","cyom":false,"competitive":0.8003199679231757,"pagerDutyNotificationEnabled":false,"approved":true,"rewardsMinSize":20,"rewardsMaxSpread":4.5,"spread":0.001,"oneDayPriceChange":0.3595,"lastTradePrice":0.999,"bestBid":0.999,"bestAsk":1,"automaticallyActive":true,"clearBookOnStart":false,"manualActivation":false,"negRiskOther":false,"umaResolutionStatuses":"[\"proposed\", \"proposed\"]","pendingDeployment":false,"deploying":false,"deployingTimestamp":"2026-09-10T12:00:51.843429Z","rfqEnabled":false,"eventStartTime":"2026-09-11T13:30:00Z","holdingRewardsEnabled":false,"feesEnabled":true,"requiresTranslation":false,"feeType":"finance_prices_fees","feeSchedule":{"exponent":1,"rate":0.04,"takerOnly":true,"rebateRate":0.25},"version":"v1"}