Anthropic's Planned IPO Splits Investors Between Excitement and Alarm

Anthropic's long-awaited IPO prospectus, filed Monday, gives investors plenty to cheer and plenty to fear. Supporters point to growth figures that stand out even by the standards of the AI boom, while skeptics focus on heavy losses, large spending obligations and a lengthy list of risk disclosures.

On the positive side, bulls cite annual sales growth of 1,300%, net revenue retention of 900% and an implied gross margin of 85%. On the other side, bears highlight roughly $80 billion in net losses over the first half of the year, hundreds of billions of dollars in compute commitments and more than 90 pages of risk factors.

The numbers put Anthropic in position to pursue what could be the largest initial public offering ever. It would also be the first pure-play AI company to go public, at a time of rising interest rates and growing worries about the scale of the AI buildout. Anthropic was valued at $965 billion in May and is reportedly seeking an IPO valuation between $1.5 trillion and $2 trillion, which would instantly rank it among the 10 most valuable U.S. tech companies.

Founded in 2021 by researchers who left OpenAI, Anthropic is best known for its Claude AI models, sold through enterprise contracts and subscriptions. The prospectus says more than 11,900 customers spent at least $100,000 over the prior year, more than 1,900 spent $1 million or more, and about 250 spent $10 million or more. In the first nine months of 2026, five customers accounted for roughly a quarter of revenue.

Some investors see a historic opening. Denny Fish, a portfolio manager at Janus Henderson Investors, called it "a generational moment," while noting that "we still don't have all the details yet." Erica Brescia of Redpoint Ventures, whose firm is an investor in Anthropic, said it is easy to forget how early the industry is, and described the IPO as a chance for retail investors to take part in the transformation beyond buying chip stocks.

Others are far more critical. The company lost $80.7 billion in the first six months of this year, compared with a $12.9 billion loss over the same period in 2025, though most of the latest figure stemmed from changes in the fair value of convertible notes and derivative liabilities. Compute commitments are climbing, and lower-cost open-weight models are increasing competition.

David Trainer, CEO of New Constructs, called the offering "a huge Wall Street grift" and said his view had not changed after reading the prospectus. He cited concerns about Anthropic's competitive position, an "opaque" insider selling schedule, and commitments and liabilities that dwarf its cash. Roger McNamee, an early investor in Google and Facebook, called the IPO a "very dangerous thing for investors" and said the S-1 should be viewed as "speculative fiction."

Hurdles remain before trading begins. Anthropic must run a roadshow, gauge demand, set an offer price and allocate shares before listing on the Nasdaq under the ticker "ANT." Gil Luria of D.A. Davidson said he wants to learn more about the path to long-term profitability and, importantly, the valuation. If the pricing is right, he said, the IPO should go well because investors will want exposure to a pure play.