1st Half BTTS is a sports series on Kalshi, with markets like “Both teams score in the 1st Half?”. The Kalshi Eye archive lists 108 of its markets and has 8 days of daily Parquet files from October 14, 2026 to October 24, 2026 (864 KB), with every order book change and trade.

Venue: Kalshi, series KXUSL1HBTTS
Category: Sports
Markets: 108 (108 settled, 0 open)
Files: 8 days, October 14, 2026 to October 24, 2026, 864 KB, 67,865 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 1st Half BTTS 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 KXUSL1HBTTS 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=KXUSL1HBTTS/trades-KXUSL1HBTTS-2026-10-24.parquet'
ORDER BY ts_recv;

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

Related Kalshi series

1st Half BTTS (KXMLS1HBTTS): 126 markets, 11 days of files
EPL 1st Half BTTS (KXEPL1HBTTS): 80 markets, 12 days of files
College Football 1st Half Spread (KXNCAAF1HSPREAD): 2,620 markets, 13 days of files
College Football 1st Half Total (KXNCAAF1HTOTAL): 1,746 markets, 13 days of files
College Football 1st Half Winner (KXNCAAF1H): 1,454 markets, 13 days of files
Pro Football 1st Half Team Total (KXNFL1HTEAMTOTAL): 1,173 markets, 13 days of files

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