{"_meta":{"attribution":"Data aggregated by pdata.world (https://pdata.world) from 8 prediction-market venues; CC BY 4.0; source data © each venue.","canonical_url":"https://pdata.world/events/polymarket/1348841","as_of":"2026-11-10T12:55:52.977551Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"S&P 500 (SPX) Opens Up or Down on November 10?\" — 48% as of 2026-11-10 UTC. https://pdata.world/events/polymarket/1348841","source_url":"https://polymarket.com/event/spx-opens-up-or-down-on-november-10-2026"},"source":"polymarket","id":"1348841","ticker":"spx-opens-up-or-down-on-november-10-2026","slug":"spx-opens-up-or-down-on-november-10-2026","title":"S&P 500 (SPX) Opens Up or Down on November 10?","description":"This market will resolve to \"Up\" if the official S&P 500 Index open price for S&P 500 (SPX) on November 10 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 November 10 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","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","active":true,"closed":false,"start_date":"2026-11-09T13:00:58Z","end_date":"2026-11-10T21:00:00Z","closed_time":null,"volume":2644.063564,"volume_24hr":2645.723564,"volume_24h_change":null,"normalized_vol_24hr":24.670284271240234,"normalized_volume":14.085445404052734,"liquidity":1166.1405,"open_interest":1798.983013,"categories":["Finance"],"tags":[{"id":"102683","slug":"spx","label":"SPX"},{"id":"102127","slug":"up-or-down","label":"Up or Down"},{"id":"102281","slug":"daily","label":"Daily"},{"id":"102682","slug":"indicies","label":"Indicies"},{"id":"120","slug":"finance","label":"Finance"},{"id":"102169","slug":"hide-from-new","label":"Hide From New"}],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"","top_outcome_probability":0.48,"top_outcome_prob_24h_change":-0.26,"top_outcome_volume_24h_change":2645.723564,"updated_at":"2026-11-10T12:38:23.062312Z","fetched_at":"2026-11-10T12:38:23.062312Z","added_at":"2026-11-09T13:15:56.293151Z","url":"https://polymarket.com/event/spx-opens-up-or-down-on-november-10-2026","chart_24h":[0.0,0.0,0.0,100.0,100.0,100.0,100.0,100.0,140.0,265.0,265.0,272.462687,272.462687,272.462687,462.462687,462.462687,842.429899,1103.685189,1161.1344629999999,1322.3663459999998,1332.3663459999998,1432.6863459999997,1470.818846,2556.926897,2642.396897],"kind":"live","mutually_exclusive":false,"markets_total":1,"markets":[{"source":"polymarket","id":"6902955","event_id":"1348841","slug":"spx-opens-up-or-down-on-november-10-2026","question":"S&P 500 (SPX) Opens Up or Down on November 10?","group_item_title":null,"description":"This market will resolve to \"Up\" if the official S&P 500 Index open price for S&P 500 (SPX) on November 10 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 November 10 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","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","outcomes":["Up","Down"],"outcome_prices":[0.48,0.52],"probability":0.48,"spread":0.16,"active":true,"closed":false,"start_date":"2026-11-09T13:00:58Z","end_date":"2026-11-10T21:00:00Z","closed_time":null,"result":null,"volume":2645.723564,"volume_24hr":2645.723564,"prob_24h_change":-0.26,"volume_24h_change":2645.723564,"normalized_vol_24hr":27.857080459594727,"normalized_volume":18.222980499267578,"liquidity":1085.111,"categories":["Finance"],"countries":[],"updated_at":"2026-11-10T12:38:23.221991Z","fetched_at":"2026-11-10T12:38:23.221991Z","added_at":"2026-11-09T13:15:56.505243Z","url":"https://polymarket.com/event/spx-opens-up-or-down-on-november-10-2026/spx-opens-up-or-down-on-november-10-2026","event_title":"S&P 500 (SPX) Opens Up or Down on November 10?","chart_24h":[0.74,0.77,0.745,0.625,0.63,0.715,0.72,0.615,0.585,0.53,0.56,0.605,0.54,0.445,0.46,0.56,0.675,0.66,0.675,0.565,0.63,0.535,0.575,0.51]}]}