{"source":"kalshi","id":"KXINXHUD-26AUG171300","ticker":"KXINXHUD-26AUG171300","slug":"KXINXHUD-26AUG171300","title":"S&P 500 Hourly Up/Down","description":null,"image":null,"icon":null,"active":false,"closed":true,"start_date":"2026-08-17T16:00:00Z","end_date":"2026-08-17T20:00:00Z","closed_time":"2026-08-17T17:00:00Z","volume":4801.07,"volume_24hr":4801.07,"volume_24h_change":null,"normalized_vol_24hr":25.91083526611328,"normalized_volume":19.859651565551758,"liquidity":null,"open_interest":2743.0,"categories":["Finance"],"tags":[],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Above $7774.97","top_outcome_probability":0.01,"top_outcome_prob_24h_change":-0.53,"top_outcome_volume_24h_change":4717.429999999999,"updated_at":"2026-08-17T17:09:26.557194Z","fetched_at":"2026-08-17T17:09:26.557194Z","added_at":"2026-08-17T16:14:11.222328Z","url":"https://kalshi.com/markets/kxinxhud/sp-500-hourly-updown/kxinxhud-26aug171300","chart_24h":[83.64,4801.07],"markets":[{"source":"kalshi","id":"KXINXHUD-26AUG171300-T7774.97","event_id":"KXINXHUD-26AUG171300","slug":"KXINXHUD-26AUG171300-T7774.97","question":"Will the S&P 500 be above $7774.97 at Aug 17, 2026 at 1pm EDT?","group_item_title":"Above $7774.97","description":"If the value of S&P 500 is above $7774.97 at 1:00 PM ET on August 17, 2026, then the market resolves to Yes.\n\n---\n\nThis is an Up/Down market on || Index ||: it resolves Yes if || Index || finishes higher than its reference level, and No if it finishes flat or lower. The reference level (|| Value ||) is the value of || Index || at the start of the hour. If no data is available for the period by expiration, the market resolves No.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.01,0.99],"probability":0.01,"spread":1.0,"active":false,"closed":true,"start_date":"2026-08-17T16:00:00Z","end_date":"2026-08-17T20:00:00Z","closed_time":"2026-08-17T17:00:00Z","volume":4801.07,"volume_24hr":4801.07,"prob_24h_change":-0.53,"volume_24h_change":4717.429999999999,"normalized_vol_24hr":28.05812644958496,"normalized_volume":22.36884117126465,"liquidity":null,"categories":["Finance"],"countries":[],"updated_at":"2026-08-17T17:10:33.181611Z","fetched_at":"2026-08-17T17:09:26.571251Z","added_at":"2026-08-17T16:14:11.365920Z","url":"https://kalshi.com/markets/kxinxhud/sp-500-hourly-updown/kxinxhud-26aug171300","event_title":"S&P 500 Hourly Up/Down","chart_24h":[0.54,0.01]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXINXHUD-26AUG171300","as_of":"2026-08-17T21:00:31.936358Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"S&P 500 Hourly Up/Down\" — top market at 1% probability across 1 outcome","source_url":null}}