World Series (KXMLB) historical data

World Series is a sports series on Kalshi, with markets like “Will Los Angeles D win the 2026 Pro Baseball Championship?”. The Kalshi Eye archive lists 30 of its markets and has 13 days of daily Parquet files from October 12, 2026 to October 24, 2026 (81 MB), with every order book change and trade.

• Venue: Kalshi, series KXMLB
• Category: Sports
• Markets: 30 (28 settled, 2 open)
• Files: 13 days, October 12, 2026 to October 24, 2026, 81 MB, 5,556,623 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 World Series 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 KXMLB 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=KXMLB/trades-KXMLB-2026-10-24.parquet'
ORDER BY ts_recv;

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

Related Kalshi series

• DP World Tour Tournament Winner (KXDPWORLDTOUR): 397 markets, 11 days of files
• DP World Tour To Make Cut (KXDPWORLDTOURMAKECUT): 349 markets, 7 days of files
• DP World Tour R1 Leader (KXDPWORLDTOURR1LEAD): 349 markets, 5 days of files
• DP World Tour R2 Leader (KXDPWORLDTOURR2LEAD): 349 markets, 7 days of files
• DP World Tour R3 Leader (KXDPWORLDTOURR3LEAD): 349 markets, 10 days of files
• TT Star Series Match (KXTTSTARMATCH): 320 markets, 3 days of files

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