Anthropic plans 14 October investor day ahead of IPO

What happened: Anthropic PBC will meet prospective investors on 14 October at its San Francisco headquarters, Bloomberg reported on 1 October, citing people familiar with the matter.

The details: Invitations recently went out to a select group of institutional investors. They will be able to question senior executives.

The timeline: Anthropic could begin formally marketing the IPO the week of 9 November. It is aiming to list before Thanksgiving. Bloomberg describes this as the company's firmest timeline yet. Earlier reports had pointed to October 2026.

The numbers: The reported target valuation is up to $2 trillion or more. That would make it the largest IPO of all time. Morgan Stanley, Goldman Sachs and JPMorgan are reported as underwriters.

The context: Reuters has reported on Anthropic's S-1 prospectus, which showed 2025 revenue up 12x to roughly $4.6 billion. The company's last private valuation was about $965 billion, in the May 2026 Series H-1. Yahoo Finance also reported the mid-November IPO target.

The rivals: OpenAI CEO Sam Altman has said OpenAI's own IPO is not coming this year.

The catch: The dates and valuation come from anonymous sources and could change. Anthropic has not commented publicly.

Why it matters: A listing at the reported valuation would be the largest IPO ever. The investor day is the first reported step in putting Anthropic's case directly to institutional buyers.

What's next: The investor day is on 14 October. Formal IPO marketing could follow the week of 9 November.