Core inflation is a monthly economics series on Kalshi, with markets like “Will the rate of core CPI inflation be above 3.5% for the year ending in September 2026?”. The Kalshi Eye archive lists 76 of its markets and has 13 days of daily Parquet files from October 12, 2026 to October 24, 2026 (64 MB), with every order book change and trade.

Venue: Kalshi, series KXCPICOREYOY
Category: Economics, monthly
Markets: 76 (45 settled, 31 open)
Files: 13 days, October 12, 2026 to October 24, 2026, 64 MB, 3,689,566 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 Core inflation 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 KXCPICOREYOY 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=KXCPICOREYOY/trades-KXCPICOREYOY-2026-10-24.parquet'
ORDER BY ts_recv;

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

Related Kalshi series

Year over year core inflation (KXECONSTATCORECPIYOY): 80 markets, 13 days of files
Month over month core inflation (KXECONSTATCPICORE): 56 markets, 13 days of files
US Core PCE inflation (KXPCECORE): 30 markets, 13 days of files
Year over year inflation (KXECONSTATCPIYOY): 119 markets, 13 days of files
Inflation (KXCPIYOY): 110 markets, 13 days of files
CPI core (KXCPICORE): 66 markets, 13 days of files

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