Anthropic files public IPO prospectus, seeking Nasdaq listing under ANT

Anthropic has moved its proposed stock-market debut out of confidential review and into public view. The Claude maker filed a public prospectus with the U.S. Securities and Exchange Commission and plans to list on Nasdaq under ANT, CNBC reported on October 26. The filing advances an IPO; it is not a completed share sale.

Public paperwork, not a finished offering

The public prospectus follows a confidential SEC submission in June. That earlier step allowed regulators to review Anthropic’s financial information before it became available to the public and prospective investors. The change now is access: the company’s offering documents are moving beyond the confidential review process.

Yahoo Finance had reported on October 21 that a public filing could arrive as soon as that Friday, citing three people familiar with Anthropic’s plans. Anthropic did not respond to its request for comment on timing. CNBC’s later account moves the story from an anticipated filing to a reported completed one.

The distinction has a practical consequence for the IPO schedule. Yahoo Finance said companies using the confidential process must publish registration materials at least 15 calendar days before their formal investor roadshow begins. It described a potential November listing, while stressing that market conditions and other factors could still change the timetable.

Fast sales growth, different measures of profit

The financial backdrop combines sharply rising revenue with very different profitability descriptions. According to Financial Times reporting cited by Yahoo Finance, Anthropic told investors that third-quarter revenue reached $16.8 billion, compared with $11.5 billion in the second quarter. The company also described itself as profitable on an adjusted basis.

That description sits alongside a much larger reported net loss for an earlier period. Yahoo Finance, citing The Wall Street Journal, put Anthropic’s revenue for the first six months of 2026 at $16.3 billion and its net loss above $80 billion. Those are first-half figures, not results for the third quarter.

The periods and measures should not be collapsed into a single verdict on profitability. A claim of adjusted profit is not the same claim as net profit, and the reported figures cover different stretches of the year. The public prospectus brings the company’s financial details and risks before a wider investor audience.

Valuation expectations meet a more nervous market

The scale under discussion remains extraordinary, but it is not an agreed transaction. Yahoo Finance cited earlier Reuters reporting that Anthropic could raise as much as $100 billion at a $2 trillion valuation. Those figures are reported expectations, not confirmed IPO terms or money the company has already raised through the offering.

There is a completed private financing against which to place those expectations. Anthropic raised $65 billion in May at a $965 billion valuation, according to CNBC. That earlier round establishes a private-market reference point; the much larger valuation discussed for an IPO belongs to a prospective public offering.

Anthropic is approaching that market while investors question whether AI-service spending will justify enormous infrastructure costs. CNBC reported that data-center providers CoreWeave and Nebius had each lost more than 30% of their value in October. The filing advances Anthropic’s process against that unsettled backdrop, rather than resolving the market’s concerns about AI economics.