Billionaires Are Selling Palantir Stock and Buying an Index Fund That May Soar Up to 54,300%, According to Certain Wall Street Experts was originally published by The Motley Fool Investors are piling into the analytics and artificial intelligence upstart.

There have been few better stocks to own over the past three months than Palantir ( PLTR 1.42%). The stock more than doubled in that time, far outperforming both indexes and other market leaders. This performance can be traced to several events, notably Palantir's inclusion in the S&P 500 in September and its blowout Q3 earnings.

CEO Alex Karp took a victory lap following his company's most recent earnings, saying the results were so strong that "I almost feel like we should just go home." Later he took a swipe at any critics who challenged his sanity in making such a comment.