U.S. stocks fell to their worst loss since Election Day as the boost that Wall Street got from last week’s victory for Donald Trump and a cut to interest rates by the Federal Reserve kept fading.

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.