CPI core is a monthly economics series on Kalshi, with markets like “Will CPI Core rise more than 1.0% in September?”. The Kalshi Eye archive lists 66 of its markets and has 13 days of daily Parquet files from October 12, 2026 to October 24, 2026 (39 MB), with every order book change and trade.

Venue: Kalshi, series KXCPICORE
Category: Economics, monthly
Markets: 66 (33 settled, 33 open)
Files: 13 days, October 12, 2026 to October 24, 2026, 39 MB, 2,679,056 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 core 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 KXCPICORE 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=KXCPICORE/trades-KXCPICORE-2026-10-24.parquet'
ORDER BY ts_recv;

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

Related Kalshi series

Core goods CPI MoM (KXCPICOREGOODSMOM): 14 markets, 7 days of files
CPI-U index in [month] (KXCPINDEX): 111 markets, 13 days of files
US gasoline CPI in [month] (KXUSGASCPI): 92 markets, 13 days of files
Year over year core inflation (KXECONSTATCORECPIYOY): 80 markets, 13 days of files
Core inflation (KXCPICOREYOY): 76 markets, 13 days of files
CPI (KXCPI): 69 markets, 13 days of files

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