A Single Investor's Post Can Wipe Out $9 Billion in Palantir Market Value

Palantir's market value dropped by nearly $9 billion in hours on April 8, as shares fell from $154 to $140. Trading volume reached 90.8 million shares, 82% above the three-month average of 49.9 million shares. The sell-off followed a post on X from investor Michael Burry, who claimed Anthropic is rapidly overtaking Palantir in enterprise adoption. Burry cited Anthropic's run-rate revenue jump from $9 billion to $30 billion and Ramp data showing a 29.4% market share in the Ramp AI Index. He noted that 70% of first-time AI buyers on Ramp chose Claude over OpenAI, and one in four businesses on the platform now use Anthropic, up from one in 25 a year earlier. Burry criticized Palantir for taking two decades to reach $5 billion in revenue.

SEC filings from 2025 show Scion Asset Management holds a short position in Palantir, and in April 2026, Burry confirmed to CNBC that he owns multiple put options. The stock recovered slightly, climbing from $123 to $128 after President Donald Trump praised the company's technology as 'great war fighting equipment' on Truth Social. Palantir's financials, including a $10 billion U.S. Army contract and a solid balance sheet, remained unchanged during the sell-off.