CPI-U index in [month] is a monthly economics series on Kalshi, with markets like “Will Consumer Price Index for All Urban Consumers: U.S. city average, All items, not seasonally adjusted, 1982–84=100 for September 2026 be above 337.000?”. The Kalshi Eye archive lists 111 of its markets and has 13 days of daily Parquet files from October 12, 2026 to October 24, 2026 (9 MB), with every order book change and trade.

Venue: Kalshi, series KXCPINDEX
Category: Economics, monthly
Markets: 111 (76 settled, 35 open)
Files: 13 days, October 12, 2026 to October 24, 2026, 9 MB, 910,121 rows
Datasets: Order book (L2, incremental), Order book snapshots (top 10, 1 second), Top of book (every change), Top of book (1-minute bars), Trades

Open CPI-U index in [month] in Markets to see every day and market, then export the days you need. Free sample files of each dataset are on the Kalshi data page.

Reading the files

Every KXCPINDEX trade on October 24, 2026, in DuckDB:

SELECT ts_recv, ticker, yes_price, size, taker_side
FROM 'kalshieye-data/trades/date=2026-10-24/series=KXCPINDEX/trades-KXCPINDEX-2026-10-24.parquet'
ORDER BY ts_recv;

To test a strategy on this series, see How to backtest Kalshi markets.

Related Kalshi series

US gasoline CPI in [month] (KXUSGASCPI): 92 markets, 13 days of files
US airline fares CPI in [month] (KXAIRFARECPI): 61 markets, 7 days of files
US shelter CPI in [month] (KXSHELTERCPI): 52 markets, 13 days of files
US used cars and trucks CPI in [month] (KXUSEDCARCPI): 44 markets, 7 days of files
FAO Food Price Index in [month]? (KXFAOFPI): 40 markets, 13 days of files
Diesel Prices month (KXDIESELMON): 77 markets, 13 days of files

Figures through October 24, 2026. All Kalshi series with pages are listed on Kalshi series.