Undefeated in College Basketball Regular Season is an annual sports series on Kalshi, with markets like “Will North Carolina go undefeated in the men's college basketball regular season?”. The Kalshi Eye archive lists 43 of its markets and has 13 days of daily Parquet files from October 12, 2026 to October 24, 2026 (2 MB), with every order book change and trade.

Venue: Kalshi, series KXNCAAMBUNDEFEATED
Category: Sports, annual
Markets: 43 (0 settled, 43 open)
Files: 13 days, October 12, 2026 to October 24, 2026, 2 MB, 633,762 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 Undefeated in College Basketball Regular Season 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 KXNCAAMBUNDEFEATED 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=KXNCAAMBUNDEFEATED/trades-KXNCAAMBUNDEFEATED-2026-10-24.parquet'
ORDER BY ts_recv;

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

Related Kalshi series

Undefeated in Women's College Basketball Regular Season (KXNCAAWBUNDEFEATED): 30 markets, 13 days of files
Undefeated in College Football Regular Season (KXNCAAFUNDEFEATED): 29 markets, 13 days of files
Men's College Basketball ACC Regular Season Top Finishers (KXNCAAMBACCREGTOP): 54 markets, 13 days of files
Men's College Basketball Big Ten Regular Season Top Finishers (KXNCAAMBBIGTENREGTOP): 54 markets, 13 days of files
Men's College Basketball Big 12 Regular Season Top Finishers (KXNCAAMBBIG12REGTOP): 48 markets, 13 days of files
Men's College Basketball SEC Regular Season Top Finishers (KXNCAAMBSECREGTOP): 48 markets, 13 days of files

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