Anthropic IPO explained: what the reported timeline means for you

Anthropic, the company behind Claude, is getting closer to selling shares to the public. That is what Bloomberg reports, citing people familiar with the matter. An IPO (initial public offering) is when a company first lists its shares on a stock market so that anyone can buy them.

According to Bloomberg, Anthropic will meet prospective investors on 14 October at its San Francisco headquarters. Invitations recently went out to a select group of institutional investors, meaning large organisations such as funds. They will be able to question senior executives.

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

The reported target valuation is up to $2 trillion or more. That would make it the largest IPO of all time. The reported underwriters, the banks that manage a share sale, are Morgan Stanley, Goldman Sachs and JPMorgan.

Some context from other reporting: Reuters reported on Anthropic's S-1 prospectus, the document a company files to register an IPO. It showed 2025 revenue up 12 times to roughly $4.6 billion. Anthropic's last private valuation was about $965 billion, in its May 2026 Series H-1 funding round. Yahoo Finance also reported the mid-November timing.

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

The reports say nothing about changes to Claude, its pricing or how you use it, so nothing is known there yet.

What the reports do cover is who gets to invest. The 14 October event is for select institutional investors, not the general public. Ordinary buyers would only be able to buy shares once the listing happens.

Treat the details with care. The dates and valuation come from anonymous sources and could change. Anthropic has not commented publicly.

The next reported milestone is the investor day on 14 October. After that, formal marketing of the IPO could start the week of 9 November, with a listing targeted before Thanksgiving. Any confirmation would have to come from Anthropic.