Anthropic's founders will sell $1.75 billion worth of shares in an IPO. Is this a bad sign for the market?

According to the updated IPO prospectus, the seven co-founders of Anthropic will sell their shares for a total of $1.75 billion during the company’s initial public offering. Each co-founder is offering approximately $250 million worth of shares for sale, based on the midpoint of the price range specified in the document: $70–78 per share. At this valuation, each co-founder’s net worth will be about $18 billion, according to Bloomberg.

Anthropic expects to raise up to $90.4 billion through an IPO and a private placement, based on a valuation of approximately $1.4 trillion. The listing price is set to be determined on November 18, and trading will begin the following day, according to the terms of the deal reviewed by the agency.

Insiders selling shares of their own company during its initial public offering—especially in such large volumes—could send a bearish signal to the market, Bloomberg warns. However, this is unlikely to deter potential buyers, according to Jay R. Ritter, a distinguished professor at the Warrington College of Business at the University of Florida, who specializes in IPO research.

“In dollar terms, this is certainly a very large sum,” he said. But “the market has become more accepting of the fact that founders and major shareholders are partially cashing out their stakes,” Ritter explains. There are precedents: the professor cited Google’s 2004 IPO as an example, when Larry Page and Sergey Brin each sold shares worth approximately $41 million, while Eric Schmidt, who was the company’s CEO at the time, — approximately $31 million.

Although the amounts that Anthropic’s co-founders plan to receive are substantial, they represent only about 1.5% of each co-founder’s stake. In addition, they have already sold part of their holdings: according to the prospectus, Dario Amodei and his sister Daniela participated in such transactions in June 2025 and April 2026. That said, the vast majority of their wealth remains tied up in Anthropic stock. Selling shares will provide the executives with additional disposable income: last year, the Amodeis received a relatively modest salary—about $650,000.

“Elon Musk isn’t selling his SpaceX shares, but he doesn’t have to worry about how to pay for his next meal,” Ritter notes. “But there are people here with enormous paper fortunes, all concentrated in a single stock, and not that much cash on hand. That’s why selling a small portion of their holdings doesn’t cause much concern in the market.”

This article was AI-translated and verified by a human editor