category filter to browse series in a category.
Subcategory: A narrower discovery grouping within a category. A series can belong to multiple subcategories. In API filters, subcategories are often represented as tags; use Get Tags for Series Categories to discover tags grouped by category.
Market: A single binary market. This is a low level object which rarely will need to be exposed on its own to members. The usage of the term “market” here is consistent with how it’s used in the backend and API.
Event: An event is a collection of markets and the basic unit that members should interact with on Kalshi.
Series: A series is a collection of related events. The following should hold true for events that make up a series:
- Each event should look at similar data for determination, but translated over another, disjoint time period.
- Series should never have a logical outcome dependency between events.
- Events in a series should have the same ticker prefix.
Ticker Conventions
Categories and subcategories help organize and filter series, but they are not part of the ticker convention. Tickers often followSeries -> Event -> Market: for example, the KXHIGHNY series may have an event like KXHIGHNY-24JAN01, and that event may have a market like KXHIGHNY-24JAN01-T60. There are occasional exceptions, so do not parse ticker strings to infer relationships. Best practice is to use the series, event, market, and search endpoints and rely on fields like series_ticker, event_ticker, category, and tags.
Please see the “Timeline and Payout” dropdown on a market’s page to find the Market, Event, and Series tickers. Note that the market ticker will depend on which market you are looking at on that page. For example, Trump and Harris are each their own market.