The main product is is “kdb+”, a simple, fast, proprietary, embedded, time series database. Especially good for tick data. I work in finance, and literally all

The main product is is “kdb+”, a simple, fast, proprietary, embedded, time series database. Especially good for tick data. I work in finance, and literally all of my employers used it. Not much secret sauce, just simple algorithms implemented very well. No real open source competitor. Well, maybe DuckDB if they support as-of joins.