{"source":"kalshi","id":"KXINXHUD-26JUL281200","ticker":"KXINXHUD-26JUL281200","slug":"KXINXHUD-26JUL281200","title":"S&P 500 Hourly Up/Down","description":null,"image":null,"icon":null,"active":false,"closed":true,"start_date":"2026-07-28T15:00:00Z","end_date":"2026-07-28T19:00:00Z","closed_time":"2026-07-28T16:00:00Z","volume":1936.69,"volume_24hr":1936.69,"volume_24h_change":null,"normalized_vol_24hr":20.397130966186523,"normalized_volume":12.80241870880127,"liquidity":null,"open_interest":839.46,"categories":["Finance"],"tags":[],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Above $7417.90","top_outcome_probability":0.99,"top_outcome_prob_24h_change":0.48,"top_outcome_volume_24h_change":1412.69,"updated_at":"2026-07-28T16:13:19.196919Z","fetched_at":"2026-07-28T16:13:19.196919Z","added_at":"2026-07-28T15:03:09.752321Z","url":"https://kalshi.com/markets/kxinxhud/sp-500-hourly-updown/kxinxhud-26jul281200","chart_24h":[524.0,1848.7,1936.69],"markets":[{"source":"kalshi","id":"KXINXHUD-26JUL281200-T7417.90","event_id":"KXINXHUD-26JUL281200","slug":"KXINXHUD-26JUL281200-T7417.90","question":"Will the S&P 500 be above $7417.90 at Jul 28, 2026 at 12pm EDT?","group_item_title":"Above $7417.90","description":"If the value of S&P 500 is above $7417.90 at 12:00 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":[0.99,0.010000000000000009],"probability":0.99,"spread":1.0,"active":false,"closed":true,"start_date":"2026-07-28T15:00:00Z","end_date":"2026-07-28T19:00:00Z","closed_time":"2026-07-28T16:00:00Z","volume":1936.69,"volume_24hr":1936.69,"prob_24h_change":0.48,"volume_24h_change":1412.69,"normalized_vol_24hr":22.426101684570312,"normalized_volume":14.910467147827148,"liquidity":null,"categories":["Finance"],"countries":[],"updated_at":"2026-07-28T16:14:05.184787Z","fetched_at":"2026-07-28T16:13:19.218367Z","added_at":"2026-07-28T15:03:09.869889Z","url":"https://kalshi.com/markets/kxinxhud/sp-500-hourly-updown/kxinxhud-26jul281200","event_title":"S&P 500 Hourly Up/Down","chart_24h":[0.51,0.99,0.99]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXINXHUD-26JUL281200","as_of":"2026-07-28T19:00:43.599488Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"S&P 500 Hourly Up/Down\" — top market at 99% probability across 1 outcome","source_url":null}}