Supreme Court decisions (KXSCOTUSCASE) historical data

Supreme Court decisions is a one-time politics series on Kalshi, with markets like “Will the Supreme Court rule in favor of International Partners for Ethical Care, Inc in International Partners for Ethical Care, Inc. v. Ferguson”. The Kalshi Eye archive lists 25 of its markets and has 12 days of daily Parquet files from October 12, 2026 to October 23, 2026 (4 MB), with every order book change and trade.

• Venue: Kalshi, series KXSCOTUSCASE
• Category: Politics, one-time
• Markets: 25 (1 settled, 24 open)
• Files: 12 days, October 12, 2026 to October 23, 2026, 4 MB, 543,748 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 Supreme Court decisions 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 KXSCOTUSCASE trade on October 23, 2026, in DuckDB:

SELECT ts_recv, ticker, yes_price, size, taker_side
FROM 'kalshieye-data/trades/date=2026-10-23/series=KXSCOTUSCASE/trades-KXSCOTUSCASE-2026-10-23.parquet'
ORDER BY ts_recv;

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

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• Traffic through the Strait of Hormuz (KXHORMUZWEEKLY): 122 markets, 12 days of files
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• Maximum traffic through the Strait of Hormuz? (KXHORMUZMAX): 105 markets, 12 days of files

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