Then, short seller Andrew Left of Citron Research said PLTR stock was "detached from fundamentals and analysis". He's certainly not the first one to suggest that the Palantir rally has gone too far. However,

Palantir (PLTR) shares closed in the red on Monday after Citron Research, a renowned short seller, warned the AI-enabled data analytics firm is trading at a valuation that’s super disconnected from its fundamentals.

Andrew Left argues that investors have overhyped Palantir stock, and its valuation pales in comparison to a true AI leader like OpenAI.