{"source":"kalshi","id":"KXATPNATSTAGE-26SF","ticker":"KXATPNATSTAGE-26SF","slug":"KXATPNATSTAGE-26SF","title":"US Open Men's Singles: Americans to Reach Semifinals","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2026-08-20T19:37:00Z","end_date":"2026-09-21T14:00:00Z","closed_time":null,"volume":1087.72,"volume_24hr":1087.72,"volume_24h_change":null,"normalized_vol_24hr":17.567134857177734,"normalized_volume":13.472464561462402,"liquidity":null,"open_interest":891.0,"categories":["Sports"],"tags":[],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"1+ Americans","top_outcome_probability":0.41,"top_outcome_prob_24h_change":0.41,"top_outcome_volume_24h_change":887.72,"updated_at":"2026-08-22T04:40:47.626957Z","fetched_at":"2026-08-22T04:40:47.626957Z","added_at":"2026-08-20T19:46:40.239130Z","url":"https://kalshi.com/markets/kxatpnatstage/us-open-mens-singles-americans-to-reach-semifinals/kxatpnatstage-26sf","chart_24h":[98.36,298.36,989.36,1087.72],"markets":[{"source":"kalshi","id":"KXATPNATSTAGE-26SF-1","event_id":"KXATPNATSTAGE-26SF","slug":"KXATPNATSTAGE-26SF-1","question":"1+ American players to reach the Semifinals in the 2026 US Open Men's Singles?","group_item_title":"1+ Americans","description":"If 1+ Americans reach the Semifinals in the 2026 US Open Men's Singles, then the market resolves to Yes.\n\n---\n\nKalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.41,0.5900000000000001],"probability":0.41,"spread":0.06999999999999995,"active":true,"closed":false,"start_date":"2026-08-20T19:37:00Z","end_date":"2026-09-21T14:00:00Z","closed_time":"2026-09-21T14:00:00Z","volume":887.72,"volume_24hr":887.72,"prob_24h_change":0.41,"volume_24h_change":887.72,"normalized_vol_24hr":18.02292251586914,"normalized_volume":14.35129451751709,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-22T06:40:40.594101Z","fetched_at":"2026-08-22T06:40:40.594101Z","added_at":"2026-08-20T19:46:40.419883Z","url":"https://kalshi.com/markets/kxatpnatstage/us-open-mens-singles-americans-to-reach-semifinals/kxatpnatstage-26sf","event_title":"US Open Men's Singles: Americans to Reach Semifinals","chart_24h":[0.0,0.0,0.39,0.39,0.39,0.39,0.39,0.39,0.39,0.47,0.47,0.41,0.41]},{"source":"kalshi","id":"KXATPNATSTAGE-26SF-2","event_id":"KXATPNATSTAGE-26SF","slug":"KXATPNATSTAGE-26SF-2","question":"2+ American players to reach the Semifinals in the 2026 US Open Men's Singles?","group_item_title":"2+ Americans","description":"If 2+ Americans reach the Semifinals in the 2026 US Open Men's Singles, then the market resolves to Yes.\n\n---\n\nKalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.22,0.78],"probability":0.22,"spread":0.08000000000000002,"active":true,"closed":false,"start_date":"2026-08-20T19:37:00Z","end_date":"2026-09-21T14:00:00Z","closed_time":"2026-09-21T14:00:00Z","volume":200.0,"volume_24hr":200.0,"prob_24h_change":0.22,"volume_24h_change":200.0,"normalized_vol_24hr":10.995290756225586,"normalized_volume":8.755331039428711,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-22T06:40:40.594101Z","fetched_at":"2026-08-22T06:40:40.594101Z","added_at":"2026-08-20T19:46:40.419883Z","url":"https://kalshi.com/markets/kxatpnatstage/us-open-mens-singles-americans-to-reach-semifinals/kxatpnatstage-26sf","event_title":"US Open Men's Singles: Americans to Reach Semifinals","chart_24h":[0.0,0.0,0.0,0.22,0.22,0.22,0.22,0.22]},{"source":"kalshi","id":"KXATPNATSTAGE-26SF-3","event_id":"KXATPNATSTAGE-26SF","slug":"KXATPNATSTAGE-26SF-3","question":"3+ American players to reach the Semifinals in the 2026 US Open Men's Singles?","group_item_title":"3+ Americans","description":"If 3+ Americans reach the Semifinals in the 2026 US Open Men's Singles, then the market resolves to Yes.\n\n---\n\nKalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.06,"active":true,"closed":false,"start_date":"2026-08-20T19:37:00Z","end_date":"2026-09-21T14:00:00Z","closed_time":"2026-09-21T14:00:00Z","volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.0,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-21T11:42:45.544859Z","fetched_at":"2026-08-21T11:42:45.544859Z","added_at":"2026-08-20T19:46:40.419883Z","url":"https://kalshi.com/markets/kxatpnatstage/us-open-mens-singles-americans-to-reach-semifinals/kxatpnatstage-26sf","event_title":"US Open Men's Singles: Americans to Reach Semifinals","chart_24h":null}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXATPNATSTAGE-26SF","as_of":"2026-08-22T08:20:52.410529Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"US Open Men's Singles: Americans to Reach Semifinals\" — top market at 41% probability across 3 outcomes","source_url":null}}