Foreign U.S. Treasury holdings increase is an annual economics series on Kalshi, with markets like “Will the United Kingdom's U.S. Treasury holdings increase in 2026?”. The Kalshi Eye archive lists 12 of its markets and has 12 days of daily Parquet files from October 12, 2026 to October 23, 2026 (882 KB), with every order book change and trade.

Venue: Kalshi, series KXUSTHOLDERS
Category: Economics, annual
Markets: 12 (0 settled, 12 open)
Files: 12 days, October 12, 2026 to October 23, 2026, 882 KB, 108,887 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 Foreign U.S. Treasury holdings increase 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 KXUSTHOLDERS 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=KXUSTHOLDERS/trades-KXUSTHOLDERS-2026-10-23.parquet'
ORDER BY ts_recv;

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

Related Kalshi series

Ohio gas price (KXAAAGASDOH): 458 markets, 12 days of files
Wisconsin gas price (KXAAAGASDWI): 428 markets, 12 days of files
Florida gas price (KXAAAGASDFL): 418 markets, 12 days of files
Indiana gas price (KXAAAGASDIN): 398 markets, 12 days of files
Colorado gas price (KXAAAGASDCO): 378 markets, 12 days of files
Illinois gas price (KXAAAGASDIL): 378 markets, 12 days of files

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