Kalshi Crypto Market Windows and Series, Explained

The series, per asset

For each crypto asset Kalshi lists, the tickers follow a pattern. Replace {ASSET} with the asset code (e.g. BTC, ETH):

• KX{ASSET}15M — the 15-minute up/down series: rapid-fire markets on whether the asset rises or falls over a 15-minute window.
• KX{ASSET} — the threshold series: 'will the asset be above/below level X' style markets.
• KX{ASSET}D — the directional series.

The window is per-market, carried by market_type

The threshold and directional series each run hourly, daily, and weekly markets concurrently, so you can't read a market's window from its series alone. Kalshi's market_type field carries each market's actual window, and DepthFeed exposes it on the API as a ?type= filter (15m, 1h, 24h, 1w).

One related gotcha: identify the asset from the series prefix, not by substring-matching the ticker. Searching for 'bnb' inside a ticker, for instance, also matches unrelated codes — the series prefix (KX{ASSET}…) is the reliable key for the asset.

Series and windows, at a glance

Why this matters for data and backtests

If you try to read a market's window from its series, or detect the asset by substring-matching the ticker, you'll mis-bucket markets and your backtest will compare apples to oranges. Use the series prefix for the asset and the market_type field for the window, and the 15-minute, hourly, daily, and weekly windows stay clean across all seven crypto assets (BTC, ETH, SOL, XRP, DOGE, BNB, HYPE).

All of it is captured with the full yes/no order book, up to 100 levels per side, polled continuously from Kalshi's public REST API; the licensed historical archive extends the same series further back.