{"source":"kalshi","id":"KXINXHUD-26JUL281300","ticker":"KXINXHUD-26JUL281300","slug":"KXINXHUD-26JUL281300","title":"S&P 500 Hourly Up/Down","description":null,"image":null,"icon":null,"active":false,"closed":true,"start_date":"2026-07-28T16:00:00Z","end_date":"2026-07-28T20:00:00Z","closed_time":"2026-07-28T17:00:00Z","volume":4092.33,"volume_24hr":4092.33,"volume_24h_change":null,"normalized_vol_24hr":24.68203353881836,"normalized_volume":15.457221984863281,"liquidity":null,"open_interest":1275.81,"categories":["Finance"],"tags":[],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Above $7447.72","top_outcome_probability":0.98,"top_outcome_prob_24h_change":0.78,"top_outcome_volume_24h_change":1874.77,"updated_at":"2026-07-28T17:10:10.545309Z","fetched_at":"2026-07-28T17:10:10.545309Z","added_at":"2026-07-28T16:13:08.659783Z","url":"https://kalshi.com/markets/kxinxhud/sp-500-hourly-updown/kxinxhud-26jul281300","chart_24h":[2217.56,4092.33],"markets":[{"source":"kalshi","id":"KXINXHUD-26JUL281300-T7447.72","event_id":"KXINXHUD-26JUL281300","slug":"KXINXHUD-26JUL281300-T7447.72","question":"Will the S&P 500 be above $7447.72 at Jul 28, 2026 at 1pm EDT?","group_item_title":"Above $7447.72","description":"If the value of S&P 500 is above $7447.72 at 1:00 PM ET on July 28, 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":[0.98,0.020000000000000018],"probability":0.98,"spread":1.0,"active":false,"closed":true,"start_date":"2026-07-28T16:00:00Z","end_date":"2026-07-28T20:00:00Z","closed_time":"2026-07-28T17:00:00Z","volume":4092.33,"volume_24hr":4092.33,"prob_24h_change":0.78,"volume_24h_change":1874.77,"normalized_vol_24hr":27.078336715698242,"normalized_volume":18.002410888671875,"liquidity":null,"categories":["Finance"],"countries":[],"updated_at":"2026-07-28T17:10:54.436012Z","fetched_at":"2026-07-28T17:10:10.560364Z","added_at":"2026-07-28T16:13:08.814333Z","url":"https://kalshi.com/markets/kxinxhud/sp-500-hourly-updown/kxinxhud-26jul281300","event_title":"S&P 500 Hourly Up/Down","chart_24h":[0.2,0.98]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXINXHUD-26JUL281300","as_of":"2026-07-28T19:40:17.879683Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"S&P 500 Hourly Up/Down\" — top market at 98% probability across 1 outcome","source_url":null}}