Palantir surged more than 23% in premarket trading after reporting stronger-than-expected fourth-quarter results and guidance driven by AI CEO and co-founder Alex Karp called the momentum within its commercial and government segments "unlike anything that has come before.

The AI-focused Palantir joins a group of less than 50 public American companies worth at least $200 billion, quite the turn of events for the government contractor worth less than $20 billion two years ago.

Palantir Technologies reported strong revenue growth last quarter as the company that made its name providing software to the U.S. government said demand for its artificial intelligence products continues to expand.