NBA 1st Half Spread is a sports series on Kalshi, with markets like “Oklahoma City wins the 1st half by over 22.5 points”. The Kalshi Eye archive lists 1,080 of its markets and has 11 days of daily Parquet files from October 13, 2026 to October 24, 2026 (287 MB), with every order book change and trade.

Venue: Kalshi, series KXNBA1HSPREAD
Category: Sports
Markets: 1,080 (966 settled, 114 open)
Files: 11 days, October 13, 2026 to October 24, 2026, 287 MB, 27,335,450 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 NBA 1st Half 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 KXNBA1HSPREAD 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=KXNBA1HSPREAD/trades-KXNBA1HSPREAD-2026-10-24.parquet'
ORDER BY ts_recv;

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

Related Kalshi series

College Football 1st Half Spread (KXNCAAF1HSPREAD): 2,620 markets, 13 days of files
NBA 1st Half Total (KXNBA1HTOTAL): 1,054 markets, 11 days of files
NBA 1st Half Team Total (KXNBA1HTEAMTOTAL): 718 markets, 3 days of files
NBA 2nd Half Spread (KXNBA2HSPREAD): 688 markets, 6 days of files
NBA 1st Quarter Spread (KXNBA1QSPREAD): 496 markets, 6 days of files
NBA 1st Half Winner (KXNBA1H): 335 markets, 13 days of files

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