When SP500 price is a one-time financials series on Kalshi, with markets like “Will the S&P 500 Index be above $10,000 before Dec 31, 2029?”. The Kalshi Eye archive lists 19 of its markets and has 13 days of daily Parquet files from October 12, 2026 to October 24, 2026 (13 MB), with every order book change and trade.

Venue: Kalshi, series KXSP500WHEN
Category: Financials, one-time
Markets: 19 (8 settled, 11 open)
Files: 13 days, October 12, 2026 to October 24, 2026, 13 MB, 1,540,101 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 When SP500 price 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 KXSP500WHEN 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=KXSP500WHEN/trades-KXSP500WHEN-2026-10-24.parquet'
ORDER BY ts_recv;

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

Related Kalshi series

Companies added to SP500 (KXSP500ADDQ): 57 markets, 13 days of files
Companies removed from SP500 (KXSP500REMOVEQ): 26 markets, 13 days of files
UST 7 Year Daily (KXUST7AD): 250 markets, 12 days of files
UST 10 Year Daily (KXUST10AD): 220 markets, 12 days of files
UST 2 Year Daily (KXUST2AD): 210 markets, 12 days of files
UST 30 Year Daily (KXUST30AD): 210 markets, 12 days of files

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