{"source":"polymarket","id":"579765","ticker":"spx-opens-up-or-down-on-june-11-2026","slug":"spx-opens-up-or-down-on-june-11-2026","title":"S&P 500 (SPX) Opens Up or Down on June 11?","description":"This market will resolve to \"Up\" if the official S&P 500 Index open price for S&P 500 (SPX) on June 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 June 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","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":"2026-06-10T12:17:32.585191Z","end_date":"2026-06-11T20:00:00Z","closed_time":null,"volume":13041.970942000002,"volume_24hr":13041.970941999998,"volume_24h_change":null,"normalized_vol_24hr":26.72164535522461,"normalized_volume":19.636091232299805,"liquidity":1932.9257,"open_interest":4062.13945,"categories":["Finance"],"tags":[{"id":"102169","slug":"hide-from-new","label":"Hide From New"},{"id":"102281","slug":"daily","label":"Daily"},{"id":"120","slug":"finance","label":"Finance"},{"id":"104181","slug":"rewards-automation-400-4pt5-50-1","label":"Rewards Automation 400, 4.5, 50 (1)"},{"id":"102683","slug":"spx","label":"SPX"},{"id":"102127","slug":"up-or-down","label":"Up or Down"},{"id":"102682","slug":"indicies","label":"Indicies"}],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"","top_outcome_probability":0.63,"top_outcome_prob_24h_change":0.125,"top_outcome_volume_24h_change":13118.390941999998,"updated_at":"2026-06-11T03:53:06.577252Z","fetched_at":"2026-06-11T03:53:06.577252Z","added_at":"2026-06-10T12:17:34.286334Z","url":"https://polymarket.com/event/spx-opens-up-or-down-on-june-11-2026","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,134.2708,134.2708,510.26883399999997,870.700401,870.700401,936.570401,2828.177111,4965.539513,8221.956966,11900.259941999999,12868.327335999998,12977.052910999999],"markets":[{"source":"polymarket","id":"2489996","event_id":"579765","slug":"spx-opens-up-or-down-on-june-11-2026","question":"S&P 500 (SPX) Opens Up or Down on June 11?","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 June 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 June 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","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":[0.63,0.37],"probability":0.63,"spread":0.02,"active":true,"closed":false,"start_date":"2026-06-10T12:03:52.201425Z","end_date":"2026-06-11T20:00:00Z","closed_time":null,"volume":13118.390942000002,"volume_24hr":13118.390941999998,"prob_24h_change":0.125,"volume_24h_change":13118.390941999998,"normalized_vol_24hr":31.101806640625,"normalized_volume":23.061580657958984,"liquidity":1869.017,"categories":["Finance"],"countries":[],"updated_at":"2026-06-11T03:53:46.802961Z","fetched_at":"2026-06-11T03:53:06.670640Z","added_at":"2026-06-10T12:17:34.346972Z","url":"https://polymarket.com/event/spx-opens-up-or-down-on-june-11-2026/spx-opens-up-or-down-on-june-11-2026","event_title":"S&P 500 (SPX) Opens Up or Down on June 11?","chart_24h":[0.505,0.495,0.5,0.505,0.71,0.72,0.705,0.715,0.69,0.695,0.71,0.705,0.465,0.45,0.48,0.415,0.32,0.425,0.505,0.625,0.505,0.585]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/polymarket/579765","as_of":"2026-06-11T03:58:53.473371Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"S&P 500 (SPX) Opens Up or Down on June 11?\" — top market at 63% probability across 1 outcome","source_url":null}}