Head of the Charles is a sports series on Kalshi, with markets like “Buckingham Browne and Nichols (bow 46) wins”. The Kalshi Eye archive lists 86 of its markets and has 5 days of daily Parquet files from October 15, 2026 to October 19, 2026 (3 MB), with every order book change and trade.

Venue: Kalshi, series KXHEADOFCHARLES
Category: Sports
Markets: 86 (86 settled, 0 open)
Files: 5 days, October 15, 2026 to October 19, 2026, 3 MB, 416,818 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 Head of the Charles 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 KXHEADOFCHARLES trade on October 19, 2026, in DuckDB:

SELECT ts_recv, ticker, yes_price, size, taker_side
FROM 'kalshieye-data/trades/date=2026-10-19/series=KXHEADOFCHARLES/trades-KXHEADOFCHARLES-2026-10-19.parquet'
ORDER BY ts_recv;

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

Related Kalshi series

NBA Head to Head Win Total (KXNBAH2HWINS): 30 markets, 13 days of files
Pro Football Head-to-Head Win Totals (KXNFLH2HWINS): 22 markets, 13 days of files
College Football Head-to-Head Regular Season Wins (KXNCAAFH2HWINS): 21 markets, 13 days of files
Season Fantasy Football Head-to-Head (KXNFLFFH2HSEASON): 30 markets, 13 days of files
ESoccer Game (KXESOCCERGAME): 19,773 markets, 13 days of files
College Football Spread (KXNCAAFSPREAD): 6,787 markets, 13 days of files

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