{"_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/1307706","as_of":"2026-11-04T15:11:23.070799Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"S&P 500 (SPX) Opens Up or Down on November 4?\" — 100% as of 2026-11-04 UTC. https://pdata.world/events/polymarket/1307706","source_url":"https://polymarket.com/event/spx-opens-up-or-down-on-november-4-2026"},"source":"polymarket","id":"1307706","ticker":"spx-opens-up-or-down-on-november-4-2026","slug":"spx-opens-up-or-down-on-november-4-2026","title":"S&P 500 (SPX) Opens Up or Down on November 4?","description":"This market will resolve to \"Up\" if the official S&P 500 Index open price for S&P 500 (SPX) on November 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 November 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","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":"2026-11-03T13:00:58Z","end_date":"2026-11-04T21:00:00Z","closed_time":null,"volume":9497.013551,"volume_24hr":9497.013551,"volume_24h_change":null,"normalized_vol_24hr":29.75098419189453,"normalized_volume":19.037538528442383,"liquidity":1540.61942,"open_interest":6776.853141,"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":0.9995,"top_outcome_prob_24h_change":0.37450000000000006,"top_outcome_volume_24h_change":9497.013551,"updated_at":"2026-11-04T15:06:03.924418Z","fetched_at":"2026-11-04T15:06:03.924418Z","added_at":"2026-11-03T13:24:40.952673Z","url":"https://polymarket.com/event/spx-opens-up-or-down-on-november-4-2026","chart_24h":[0.0,0.0,0.0,5.194804,99.994804,129.994804,129.994804,169.994804,294.994804,572.518484,572.518484,1008.5075400000001,1262.0849910000002,1392.734991,1448.754991,1453.754991,1852.771624,2393.587951,2593.267951,3096.397551,3663.033551,6768.003551],"kind":"live","mutually_exclusive":false,"markets_total":1,"markets":[{"source":"polymarket","id":"6634130","event_id":"1307706","slug":"spx-opens-up-or-down-on-november-4-2026","question":"S&P 500 (SPX) Opens Up or Down on November 4?","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 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 November 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","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":[0.9995,0.0005],"probability":0.9995,"spread":0.001,"active":true,"closed":false,"start_date":"2026-11-03T13:00:58Z","end_date":"2026-11-04T21:00:00Z","closed_time":null,"result":null,"volume":9497.013551,"volume_24hr":9497.013551,"prob_24h_change":0.37450000000000006,"volume_24h_change":9497.013551,"normalized_vol_24hr":31.60588264465332,"normalized_volume":24.61098289489746,"liquidity":1540.61942,"categories":["Finance"],"countries":[],"updated_at":"2026-11-04T15:06:04.099332Z","fetched_at":"2026-11-04T15:06:04.099332Z","added_at":"2026-11-03T13:24:41.072237Z","url":"https://polymarket.com/event/spx-opens-up-or-down-on-november-4-2026/spx-opens-up-or-down-on-november-4-2026","event_title":"S&P 500 (SPX) Opens Up or Down on November 4?","chart_24h":[0.625,0.62,0.52,0.52,0.61,0.18,0.12,0.09,0.065,0.1135,0.1,0.2245,0.2695,0.2745,0.787,0.9545,0.977,0.9795,0.9895,0.985,0.9945,0.9995]}]}