Palantir co-founder and CEO Alex Karp attends meetings at the U.S. Capitol in Washington on Oct. 18, 2023.
With Palantir's stock plummeting more than 11% this week despite a better-than-expected earnings report, CEO Alex Karp took aim at investors betting against the software company.
Karp, who co-founded Palantir in 2003, went after short sellers in two separate interviews on CNBC this week. After "Big Short" investor Michael Burry revealed bets against Palantir and Nvidia , Karp on Tuesday accused short sellers of "market manipulation."
He repeated that message on Friday in an interview with CNBC's Sara Eisen, again knocking Burry's wager against the stock.
"To get out of his position, he had to screw the whole economy by besmirching the best financials ever ... that are helping the average person as investors [and] on the battlefield," Karp said.
Even with Palantir's slide this week, the stock is up 135% in 2025 and has multiplied 25-fold in the past three years, an extended rally that's lifted the company's market cap to over $420 billion. While revenue and profit are growing rapidly, the multiples have shot up much faster, and the stock now trades for about 220 times forward earnings, a ratio that rivals Tesla's.
Nvidia and Meta , by contrast, have forward price-to-earnings ratios of about 33 and 22, respectively.
In August, Citron Research's Andrew Left, a noted short seller, called Palantir "detached from fundamentals and analysis" and said shares should be priced at $40. It closed on Friday at $177.93 after late-day gains pushed the stock into the green.