Citron Research, the firm led by short-seller Andrew Left, unpacked its bear case for Palantir, using OpenAI to show why it may be highly overvalued.

Short-seller Andrew Left is betting against Palantir amid a stunning 144% rally in the shares in 2025. Left says the valuation is "absurd." ...

How whistleblower Andrew Left became the short-selling villain of the meme stock market craze By Charles Gasparino Published July 15, 2023, 9:08 p.m. ET ...

Andrew Left's mom worries for his safety. Left has been writing about stocks for more than a decade, but in the past few weeks has been catapulted to front-page news.