Palantir 's stock fell 6% on Tuesday as Wall Street analysts raised concerns about the company's elevated valuation and "Big Short" investor Michael Burry revealed a short position in the software company.
During an interview with CNBC's "Squawk Box" on Tuesday, CEO Alex Karp ripped into short sellers, calling their moves "market manipulation."
Karp called the positions "super triggering" and said they are "shorting one of the great businesses of the world."
"Honestly, I think what is going on here is market manipulation," Karp said. "We delivered the best results everyone, anyone's ever seen."
The stock move overshadowed the company's top-and-bottom-line beat and stronger-than-expected guidance. Revenues also topped $1 billion for a second straight quarter and Palantir lifted its full-year guidance.
"The more muted stock reaction after hours is in the context of high expectations (recall last quarter, Palantir beat revenue by 7%) and significant outperformance (+175% YTD)," wrote Goldman Sachs analyst Gabriela Borges in a note to clients.