U.S. stocks tumbled Friday as the “Trump bump” that Wall Street got from last week’s presidential election, along with a cut to interest rates by the Federal Reserve, kept fading. The S&P 500 dropped 1.

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.