Probably the biggest concern about the stock, though, is that its valuation is unjustifiable. Palantir's shares trade at 238 times forward earnings. Its price/earnings-to-growth (PEG) ratio, which factors in analysts' earnings growth projections over the next five years, is a sky-high 4.18, according to LSEG.

Wall Street was set for a slightly higher open on Tuesday as a full U.S. approval of a COVID-19 shot boosted shares of energy and travel-related companies, while gains in technology stocks put the ...

By Sinéad Carew and Pranav Kashyap (Reuters) -Wall Street indexes rose on Thursday, with the S&P 500 and the Nasdaq Composite marking closing record highs, as investors shrugged off President Donald Trump's latest tariff moves,

Palantir Technologies (NASDAQ: PLTR) and Super Micro Computer (NASDAQ: SMCI) are two of the most popular artificial intelligence (AI) stocks on the market. Since January 2023, Palantir has returned 1,900%, and Supermicro has returned 480%. But certain Wall Street analysts think the stocks are wildly overvalued.

Nvidia (NASDAQ: NVDA) stock currently trades for around $155. However, Loop Capital just gave Nvidia a new price target of $250 per share. That indicates around 60% upside from today's price, but the implications of a $250-per-share stock are far greater.