{"_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/kalshi/KXINXDUD-26OCT21H1600","as_of":"2026-10-21T18:00:59.061866Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"S&P 500 Daily Up/Down\" — 99% as of 2026-10-21 UTC. https://pdata.world/events/kalshi/KXINXDUD-26OCT21H1600","source_url":"https://kalshi.com/markets/kxinxdud/sp-500-daily-updown/kxinxdud-26oct21h1600"},"source":"kalshi","id":"KXINXDUD-26OCT21H1600","ticker":"KXINXDUD-26OCT21H1600","slug":"KXINXDUD-26OCT21H1600","title":"S&P 500 Daily Up/Down","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2026-10-21T00:00:00Z","end_date":"2026-10-28T23:00:00Z","closed_time":null,"volume":7394.03,"volume_24hr":7394.03,"volume_24h_change":null,"normalized_vol_24hr":25.892555236816406,"normalized_volume":21.27442169189453,"liquidity":null,"open_interest":4700.87,"categories":["Finance"],"tags":[],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Above 7712.90","top_outcome_probability":0.99,"top_outcome_prob_24h_change":0.25,"top_outcome_volume_24h_change":7344.099999999999,"updated_at":"2026-10-21T17:55:37.634353Z","fetched_at":"2026-10-21T17:55:37.634353Z","added_at":"2026-10-21T00:11:23.314888Z","url":"https://kalshi.com/markets/kxinxdud/sp-500-daily-updown/kxinxdud-26oct21h1600","chart_24h":[49.93,50.56,517.16,540.72,540.84,551.44,551.44,579.42,585.98,586.98,641.2,720.2,947.35,1002.24,1002.24,1208.77,1390.63,1820.41,2894.1,4426.73,5974.71,6688.57,7394.03],"kind":"live","mutually_exclusive":false,"markets_total":1,"markets":[{"source":"kalshi","id":"KXINXDUD-26OCT21H1600-T7712.90","event_id":"KXINXDUD-26OCT21H1600","slug":"KXINXDUD-26OCT21H1600-T7712.90","question":"Will the S&P 500 be above 7712.90 on Oct 21, 2026 at 4pm EDT?","group_item_title":"Above 7712.90","description":"If the end-of-day price of the S&P 500 on October 21, 2026 is above 7712.90, 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":[0.99,0.010000000000000009],"probability":0.99,"spread":0.010000000000000009,"active":true,"closed":false,"start_date":"2026-10-21T00:00:00Z","end_date":"2026-10-28T23:00:00Z","closed_time":"2026-10-21T20:00:00Z","result":null,"volume":7394.03,"volume_24hr":7394.03,"prob_24h_change":0.25,"volume_24h_change":7344.099999999999,"normalized_vol_24hr":28.4959774017334,"normalized_volume":24.705562591552734,"liquidity":null,"categories":["Finance"],"countries":[],"updated_at":"2026-10-21T17:55:37.744330Z","fetched_at":"2026-10-21T17:55:37.744330Z","added_at":"2026-10-21T00:11:23.544755Z","url":"https://kalshi.com/markets/kxinxdud/sp-500-daily-updown/kxinxdud-26oct21h1600","event_title":"S&P 500 Daily Up/Down","chart_24h":[0.74,0.7,0.69,0.71,0.76,0.76,0.74,0.74,0.74,0.69,0.69,0.67,0.69,0.6,0.65,0.6,0.6,0.6,0.7,0.79,0.74,0.52,0.81,0.95,0.95,0.98,0.99]}]}