Pro Baseball Series Game Spread is a sports series on Kalshi, with markets like “Los Angeles D vs Milwaukee Championship Series Game Spread: Los Angeles D -1.5 games”. The Kalshi Eye archive lists 34 of its markets and has 13 days of daily Parquet files from October 12, 2026 to October 24, 2026 (29 MB), with every order book change and trade.

Venue: Kalshi, series KXMLBSERIESSPREAD
Category: Sports
Markets: 34 (29 settled, 5 open)
Files: 13 days, October 12, 2026 to October 24, 2026, 29 MB, 2,522,523 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 Pro Baseball Series Game Spread 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 KXMLBSERIESSPREAD 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=KXMLBSERIESSPREAD/trades-KXMLBSERIESSPREAD-2026-10-24.parquet'
ORDER BY ts_recv;

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

Related Kalshi series

Pro Baseball Spread (KXMLBSPREAD): 174 markets, 13 days of files
Pro Baseball Series Exact Score (KXMLBSERIESSCORE): 64 markets, 13 days of files
Pro Baseball Series Winner (KXMLBSERIES): 22 markets, 13 days of files
Pro Baseball Series Total Games (KXMLBSERIESGAMES): 21 markets, 13 days of files
WNBA Series Game Spread (KXWNBASERIESSPREAD): 14 markets, 13 days of files
Pro Baseball American League Championship Series MVP (KXMLBALCSMVP): 49 markets, 11 days of files

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