Anthropic still has no public S-1 as IPO market cools

Anthropic still has no public prospectus on file with the Securities and Exchange Commission (SEC), four months after it confidentially submitted a draft. Reports now point to a November listing, and the Financial Times reports that U.S. IPO activity is cooling. The mid-November date would be one of the most closely watched tests of investor demand in years.

Anthropic said on June 1 that it had confidentially submitted a draft S-1 registration statement. The company said the filing "gives us the option to go public after the SEC completes its review." It also said any offering "will depend on market conditions and other factors," and that it had not set a share count or price. As of October 4, no public S-1 had appeared on EDGAR, the SEC's filing database.forkast+1

A timeline that keeps moving

Bloomberg reported that Anthropic could start marketing its offering the week of November 9 and list as early as mid-November. The company is targeting a valuation of up to $2 trillion, which would make it the largest IPO on record. A follow-up report said Anthropic is set to meet prospective investors on October 14. The New York Times has reported that the offering could raise more than $100 billion.finance.yahoo+1

The timetable has already slipped. On September 4, Reuters reported that marketing would begin in mid-October at the earliest. People familiar with the plans told Reuters that the public prospectus would not come out until late September, and that the timing could still change. A company must make its S-1 public at least 15 days before roadshow meetings with investors. A roadshow in the week of November 9 would therefore need a public filing around late October.reuters+1

What the leaked prospectus shows

Reuters reviewed a draft of the prospectus. According to Fortune's summary of that reporting, Anthropic had 2025 revenue of $4.6 billion and a net loss of $42 billion. Its second-quarter 2026 revenue was $11.5 billion, up from $4.73 billion in the first quarter. The draft also describes plans to spend $518 billion on cloud services and data centers. A quarter of Anthropic's revenue comes from just two clients. According to the FT, more than a third of the document is spent on risk warnings, including "existential risks to humanity".fortune

A cooler market backdrop

The Financial Times reports that Wall Street's IPO pace has slowed because of weak demand and growing concerns about valuations. Several companies have delayed or withdrawn their listings, the FT reports, and the number of U.S. IPOs in 2026 is below last year's pace.tradingview

The first half of the year was much stronger. PwC counted 65 traditional U.S. IPOs that raised about $114.2 billion through June, its strongest first half since 2021. Even so, PwC warned that "windows can open and close quickly". PwC also said Anthropic's offering and OpenAI's, if completed, would serve as "an important barometer for investor appetite for large-scale growth companies".pwc