A series is Kalshi's repeating question (KXFEDDECISION, KXBTCD) with every event and market under it. Pick one, pick a range, get the 25-level book in YES terms, top of book, trades and Kalshi's ticker as parquet, from our own capture since 2026-09-27. Included with a Kalshi plan (its own subscription, adding up with any other venue's); one free sample day.
Every trade Kalshi reports from 30 June 2021 to 26 September 2026, for the whole exchange, one file a day. Trades only: Kalshi's historical API has no tick-level order book, so these days carry no l1, l2 or ticker.
1–50 of 5,854 series · most data
kalshi_l1Best YES bid and ask with sizes and the spread, one row whenever either changed, derived tick by tick from the rebuilt book: not Kalshi's conflated ticker.
kalshi_l2The whole ladder after every book event, in YES terms (the NO bids become the asks, at their sizes), 25 levels a side: wide columns bid_px_1 … ask_sz_25, plus the exchange's own hourly snapshots. Each row is self-contained, so you can start reading mid-day.
kalshi_tradesEvery trade: YES and NO price, size in contracts, the taker's side, block-trade flag, trade id.
kalshi_tickerKalshi's own ticker feed, about one update a second per market: last price, YES bid/ask with sizes, cumulative volume and open interest in contracts and dollars.
kalshi_cfbenchmarksThe CF Benchmarks reference indexes Kalshi's crypto markets settle on (BRTI and the ETH, SOL, XRP, DOGE … real-time indexes), 1-second and 5 Hz, with Kalshi's 60-second averages. One file a day; on L25.
ts_src_ms is the exchange's, ts_recv_ns ours (the earlier of two independent capture legs).