Palantir Technologies stock just hit another record, but the lofty valuation of the defense-focused artificial-intelligence software company has analysts questioning whether it can go much higher. Palantir stock fell 1.

An impressive surge in the past few months has boosted Palantir stock to extremely expensive valuation levels. Palantir's potential to gain a bigger share of the AI software market could propel the stock higher despite the negative sentiment.

Nvidia (NASDAQ: NVDA) and Palantir Technologies (NASDAQ: PLTR) have been two of the stock market's biggest winners over the past couple of years -- they even delivered the best performances in the Dow Jones Industrial Average and the S&P 500, respectively, in 2024.