{"_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/KXUSCPIYEAR-29FEB01","as_of":"2026-11-09T20:16:41.027912Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"US headline CPI inflation in December 2028\" — 13 markets; highest \"Above 0.0%\" at 94% as of 2026-11-09 UTC. https://pdata.world/events/kalshi/KXUSCPIYEAR-29FEB01","source_url":"https://kalshi.com/markets/kxuscpiyear/us-headline-cpi-inflation-in-december-2028/kxuscpiyear-29feb01"},"source":"kalshi","id":"KXUSCPIYEAR-29FEB01","ticker":"KXUSCPIYEAR-29FEB01","slug":"KXUSCPIYEAR-29FEB01","title":"US headline CPI inflation in December 2028","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2026-07-29T23:00:00Z","end_date":"2029-02-08T06:30:00Z","closed_time":null,"volume":8460.99,"volume_24hr":2.85,"volume_24h_change":null,"normalized_vol_24hr":0.5225469470024109,"normalized_volume":21.604829788208008,"liquidity":null,"open_interest":1722.8999999999999,"categories":["Economy"],"tags":[],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Above 0.0%","top_outcome_probability":0.94,"top_outcome_prob_24h_change":null,"top_outcome_volume_24h_change":null,"updated_at":"2026-11-09T01:23:41.283054Z","fetched_at":"2026-11-09T01:23:41.283054Z","added_at":"2026-07-29T23:05:54.790553Z","url":"https://kalshi.com/markets/kxuscpiyear/us-headline-cpi-inflation-in-december-2028/kxuscpiyear-29feb01","chart_24h":[5.7,2.85],"kind":"live","mutually_exclusive":false,"markets_total":13,"markets":[{"source":"kalshi","id":"KXUSCPIYEAR-29FEB01-T1.5","event_id":"KXUSCPIYEAR-29FEB01","slug":"KXUSCPIYEAR-29FEB01-T1.5","question":"Will the 12-month percentage change in CPI-U in December 2028 be above 1.5%?","group_item_title":"Above 1.5%","description":"If the 12-month percentage change in CPI-U, U.S. city average, all items, not seasonally adjusted, in December 2028 is above 1.5%, then the market resolves to Yes.\n\n---\n\nThe initially reported value for December 2028 will be used. 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