{"source":"polymarket","id":"608203","ticker":"spx-opens-up-or-down-on-june-22-2026","slug":"spx-opens-up-or-down-on-june-22-2026","title":"S&P 500 (SPX) Opens Up or Down on June 22?","description":"This market will resolve to \"Up\" if the official S&P 500 Index open price for S&P 500 (SPX) on June 22 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 22 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":"2026-06-18T12:02:05.270427Z","end_date":"2026-06-22T20:00:00Z","closed_time":null,"volume":4521.565103,"volume_24hr":2243.497559,"volume_24h_change":null,"normalized_vol_24hr":17.630699157714844,"normalized_volume":14.930754661560059,"liquidity":549.8826,"open_interest":2114.490907,"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":0.39,"top_outcome_prob_24h_change":0.0,"top_outcome_volume_24h_change":1865.369103,"updated_at":"2026-06-22T02:13:29.372430Z","fetched_at":"2026-06-22T02:13:29.372430Z","added_at":"2026-06-18T12:05:29.388722Z","url":"https://polymarket.com/event/spx-opens-up-or-down-on-june-22-2026","chart_24h":[378.128456,378.128456,378.128456,378.128456,378.128456,378.128456,378.128456,378.128456,378.128456,378.128456,371.461791,371.461791,371.461791,371.461791,371.461791,365.010812,365.010812,385.010812,350.610815,350.610815,348.57,344.43,376.096665,396.09666500000003,355.116665,370.116665,400.116665,400.116665,1477.846665,1779.001707,1885.942882,1934.466794,2315.397967,2243.497559],"markets":[{"source":"polymarket","id":"2595271","event_id":"608203","slug":"spx-opens-up-or-down-on-june-22-2026","question":"S&P 500 (SPX) Opens Up or Down on June 22?","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 22 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 22 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":[0.39,0.61],"probability":0.39,"spread":0.06,"active":true,"closed":false,"start_date":"2026-06-18T12:02:05.270427Z","end_date":"2026-06-22T20:00:00Z","closed_time":null,"volume":4521.565103,"volume_24hr":2243.497559,"prob_24h_change":0.0,"volume_24h_change":1865.369103,"normalized_vol_24hr":21.338367462158203,"normalized_volume":19.637039184570312,"liquidity":554.083,"categories":["Finance"],"countries":[],"updated_at":"2026-06-22T02:14:33.914979Z","fetched_at":"2026-06-22T02:13:29.775710Z","added_at":"2026-06-18T12:05:29.444026Z","url":"https://polymarket.com/event/spx-opens-up-or-down-on-june-22-2026/spx-opens-up-or-down-on-june-22-2026","event_title":"S&P 500 (SPX) Opens Up or Down on June 22?","chart_24h":[0.39,0.39,0.39,0.39,0.39,0.395,0.39,0.425,0.435,0.28,0.28,0.3,0.31,0.335,0.38,0.405,0.43,0.27,0.27,0.27,0.27,0.275,0.5,0.35,0.35,0.375,0.355,0.3,0.285,0.165,0.205,0.565,0.455,0.39]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/polymarket/608203","as_of":"2026-06-22T02:20:01.601879Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"S&P 500 (SPX) Opens Up or Down on June 22?\" — top market at 39% probability across 1 outcome","source_url":null}}