{"source":"kalshi","id":"KXINXDUD-26AUG28H1600","ticker":"KXINXDUD-26AUG28H1600","slug":"KXINXDUD-26AUG28H1600","title":"S&P 500 Daily Up/Down","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2026-08-28T00:00:00Z","end_date":"2026-09-04T23:00:00Z","closed_time":null,"volume":21217.65,"volume_24hr":21217.65,"volume_24h_change":null,"normalized_vol_24hr":35.7237434387207,"normalized_volume":27.21879005432129,"liquidity":null,"open_interest":6842.15,"categories":["Finance"],"tags":[],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Above 7730.99","top_outcome_probability":0.25,"top_outcome_prob_24h_change":-0.26,"top_outcome_volume_24h_change":21113.59,"updated_at":"2026-08-28T17:23:30.828238Z","fetched_at":"2026-08-28T17:23:30.828238Z","added_at":"2026-08-28T00:43:11.616753Z","url":"https://kalshi.com/markets/kxinxdud/sp-500-daily-updown/kxinxdud-26aug28h1600","chart_24h":[104.06,107.58,107.58,110.98,147.41,186.07,850.07,851.83,852.83,854.64,856.64,966.3,1121.92,1860.92,2003.25,2711.88,4821.11,9934.59,11739.78,16561.28,20398.52,21217.65],"markets":[{"source":"kalshi","id":"KXINXDUD-26AUG28H1600-T7730.99","event_id":"KXINXDUD-26AUG28H1600","slug":"KXINXDUD-26AUG28H1600-T7730.99","question":"Will the S&P 500 be above 7730.99 on Aug 28, 2026 at 4pm EDT?","group_item_title":"Above 7730.99","description":"If the end-of-day price of the S&P 500 on August 28, 2026 is above 7730.99, then the market resolves to Yes.\n\n---\n\nThe target value is the end-of-day/closing price of the prior week's close.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.25,0.75],"probability":0.25,"spread":0.07,"active":true,"closed":false,"start_date":"2026-08-28T00:00:00Z","end_date":"2026-09-04T23:00:00Z","closed_time":"2026-08-28T20:00:00Z","volume":21217.65,"volume_24hr":21217.65,"prob_24h_change":-0.26,"volume_24h_change":21113.59,"normalized_vol_24hr":38.49900817871094,"normalized_volume":30.897823333740234,"liquidity":null,"categories":["Finance"],"countries":[],"updated_at":"2026-08-28T17:26:38.292392Z","fetched_at":"2026-08-28T17:23:30.961950Z","added_at":"2026-08-28T00:43:11.752300Z","url":"https://kalshi.com/markets/kxinxdud/sp-500-daily-updown/kxinxdud-26aug28h1600","event_title":"S&P 500 Daily Up/Down","chart_24h":[0.51,0.55,0.55,0.57,0.57,0.57,0.55,0.5,0.5,0.5,0.54,0.55,0.51,0.51,0.51,0.53,0.51,0.5,0.52,0.58,0.59,0.61,0.52,0.9,0.92,0.6,0.41,0.25]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXINXDUD-26AUG28H1600","as_of":"2026-08-28T17:42:22.916022Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"S&P 500 Daily Up/Down\" — top market at 25% probability across 1 outcome","source_url":null}}