{"_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/1371516","as_of":"2026-11-13T16:03:48.381182Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"S&P 500 (SPX) Opens Up or Down on November 13?\" — 100% as of 2026-11-13 UTC. https://pdata.world/events/polymarket/1371516","source_url":"https://polymarket.com/event/spx-opens-up-or-down-on-november-13-2026"},"source":"polymarket","id":"1371516","ticker":"spx-opens-up-or-down-on-november-13-2026","slug":"spx-opens-up-or-down-on-november-13-2026","title":"S&P 500 (SPX) Opens Up or Down on November 13?","description":"This market will resolve to \"Up\" if the official S&P 500 Index open price for S&P 500 (SPX) on November 13 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 13 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":"2026-11-12T13:00:58Z","end_date":"2026-11-13T21:00:00Z","closed_time":null,"volume":7023.549195,"volume_24hr":7023.549195,"volume_24h_change":null,"normalized_vol_24hr":31.354801177978516,"normalized_volume":17.788257598876953,"liquidity":36098.01485,"open_interest":3227.853711,"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":0.24950000000000006,"top_outcome_volume_24h_change":7023.549195,"updated_at":"2026-11-13T15:39:26.200294Z","fetched_at":"2026-11-13T15:39:26.200294Z","added_at":"2026-11-12T13:09:50.049678Z","url":"https://polymarket.com/event/spx-opens-up-or-down-on-november-13-2026","chart_24h":[0.0,0.0,0.0,4.166667,4.166667,84.166667,444.166667,581.734235,581.734235,621.734235,968.032935,968.032935,1117.788057,1290.015449,1502.205449,2007.0966740000001,2130.521154,2415.521154,2826.351523,2826.351523,3093.757773,3290.2512800000004,3634.728841,5760.629195,7008.609195000001,7023.549195],"kind":"live","mutually_exclusive":false,"markets_total":1,"markets":[{"source":"polymarket","id":"6986486","event_id":"1371516","slug":"spx-opens-up-or-down-on-november-13-2026","question":"S&P 500 (SPX) Opens Up or Down on November 13?","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 13 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 13 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":"2026-11-12T13:00:58Z","end_date":"2026-11-13T21:00:00Z","closed_time":null,"result":null,"volume":7023.549195,"volume_24hr":7023.549195,"prob_24h_change":0.24950000000000006,"volume_24h_change":7023.549195,"normalized_vol_24hr":33.02021408081055,"normalized_volume":23.016420364379883,"liquidity":6278.01485,"categories":["Finance"],"countries":[],"updated_at":"2026-11-13T15:13:23.602023Z","fetched_at":"2026-11-13T15:13:23.602023Z","added_at":"2026-11-12T13:09:50.190138Z","url":"https://polymarket.com/event/spx-opens-up-or-down-on-november-13-2026/spx-opens-up-or-down-on-november-13-2026","event_title":"S&P 500 (SPX) Opens Up or Down on November 13?","chart_24h":[0.75,0.74,0.67,0.745,0.735,0.71,0.72,0.715,0.605,0.55,0.56,0.49,0.47,0.515,0.435,0.535,0.67,0.74,0.825,0.845,0.975,0.9995,0.9995]}]}