Palantir went public in September in a direct listing. Michael Nagle/Bloomberg Palantir Technologies has had an impressive early run in the public markets, direct-listing on the New York Stock Exchange in late September at $10 a share and rallying as high as $33.50 before recently settling into the mid-to-high $20s. But at least one analyst thinks the stock is heading for a far tougher year in 2021. Citigroup’s Tyler Radke on Wednesday cut his rating on Palantir (ticker: PLTR) to Sell from Neutral, while lifting his price target to $15 from $10. He thinks that after the huge rally since its direct listing, the stock is vulnerable heading into 2021 given a coming lockup expiration and likely growth deceleration.