Anthropic has soared to a $1.5 trillion valuation on secondary markets. Almost no one wants to sell.

Dario Amodei is the co-founder and CEO of Anthropic, Bloomberg/Getty Images Since Anthropic is still private, the vast majority of investors buy on secondary markets. Anthropic's secondary valuation has soared to $1.5 trillion over the past month, a 25% increase. Anthropic's valuation has continued to climb even as its competitors have been closing the gap. Investors still can't get enough of Anthropic. As the AI giant races towards what could be one of the largest IPOs in history, its shar...