{"$schema":"https://gamma-api.polymarket.com/schemas/Market.json","id":"4187284","question":"S&P 500 (SPX) Opens Up or Down on September 4?","conditionId":"0x1d58448e82be19576119706d7a504bc8d75feda1658f4260ed079fb680e99394","slug":"spx-opens-up-or-down-on-september-4-2026","resolutionSource":"https://www.wsj.com/market-data/stocks","endDate":"2026-09-04T20:00:00Z","liquidity":"1129.6759","startDate":"2026-09-03T12:01:03Z","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 4 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 4 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":"[\"0.655\", \"0.345\"]","volume":"2712.174955000001","active":true,"closed":false,"marketMakerAddress":"","createdAt":"2026-09-03T12:00:51.329151Z","updatedAt":"2026-09-04T11:20:13.473441Z","new":false,"featured":false,"archived":false,"resolvedBy":"0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7","restricted":true,"questionID":"0x44d3999d73206348c3e42ec788d759882424a7f52dc2b8d4e8f95db50430c1a6","enableOrderBook":true,"orderPriceMinTickSize":0.01,"orderMinSize":5,"volumeNum":2712.174955000001,"liquidityNum":1129.6759,"endDateIso":"2026-09-04","startDateIso":"2026-09-03","hasReviewedDates":true,"volume24hr":2712.174955,"volume1wk":2712.174955,"volume1mo":2712.174955,"volume1yr":2712.174955,"gameStartTime":"2026-09-03 21:00:00+00","clobTokenIds":"[\"18451210625240208121751679006486613047599172503454391689370132856196708913430\", \"5904309236928441216360387407712710666419282870486736609958306034613216653194\"]","comboStatus":"disabled","umaBond":"250","umaReward":"0.6","volume24hrClob":2712.174955,"volume1wkClob":2712.174955,"volume1moClob":2712.174955,"volume1yrClob":2712.174955,"volumeClob":2712.174955000001,"liquidityClob":1129.6759,"makerBaseFee":1000,"takerBaseFee":1000,"acceptingOrders":true,"negRisk":false,"ready":false,"funded":false,"acceptingOrdersTimestamp":"2026-09-03T12:01:03Z","cyom":false,"competitive":0.9765386587241522,"pagerDutyNotificationEnabled":false,"approved":true,"clobRewards":[{"id":"1796356","conditionId":"0x1d58448e82be19576119706d7a504bc8d75feda1658f4260ed079fb680e99394","assetAddress":"0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174","rewardsAmount":0,"rewardsDailyRate":100,"startDate":"2026-09-04","endDate":"2500-12-31"}],"rewardsMinSize":100,"rewardsMaxSpread":2.5,"spread":0.05,"oneHourPriceChange":0.07,"lastTradePrice":0.64,"bestBid":0.63,"bestAsk":0.68,"automaticallyActive":true,"clearBookOnStart":false,"manualActivation":false,"negRiskOther":false,"umaResolutionStatuses":"[]","pendingDeployment":false,"deploying":false,"deployingTimestamp":"2026-09-03T12:00:52.303728Z","rfqEnabled":false,"eventStartTime":"2026-09-04T13:30:00Z","holdingRewardsEnabled":false,"feesEnabled":true,"requiresTranslation":false,"feeType":"finance_prices_fees","feeSchedule":{"exponent":1,"rate":0.04,"takerOnly":true,"rebateRate":0.25},"version":"v1"}