Tech company Anthropic has filed a papers with the SEC to go public, joining mega-listings set to storm the markets this year like SpaceX and AI competitor, OpenAI. Here’s what we know so far.
Anthropic has confidentially submitted a draft S-1 registration statement to the Securities and Exchange Commission.
Pending completion of SEC review, this gives us the option to pursue an initial public offering.
Read more: https://t.co/onGZAhRLvD
— Anthropic (@AnthropicAI) June 1, 2026
Anthropic, the US company behind the Claude AI assistant, said on 1 June that it had confidentially submitted a draft registration statement to the United States Securities and Exchange Commission for a proposed initial public offering of its common stock. The move starts the clock on a process that could see one of the most valuable private companies in the world list on a US exchange later this year.
In its announcement, the company set out the step in careful, regulated language:
“Today, Anthropic, PBC confidentially submitted a draft registration statement on Form S-1 to the U.S. Securities and Exchange Commission for a proposed initial public offering of our common stock. This gives us the option to go public after the SEC completes its review. The proposed initial public offering will depend on market conditions and other factors.”
“The number of shares to be offered and the price have not yet been set.”
What a confidential filing actually means
A confidential S-1 is not the same as a company opening its books to the public. It lets a business begin the SEC review process in private, submitting its registration statement and financial disclosures to the regulator without those documents becoming public straight away. The full prospectus, with the financial detail investors will pour over, becomes visible only later in the process, usually a few weeks before the company markets the float.
The announcement was made under Rule 135 of the Securities Act, which is why it is so sparse. The company was clear that the filing “is not an offer to sell securities; nor is it a solicitation of an offer to buy them.” Put simply, the offer isn’t ‘on the table’ just yet, but it’s the start of the process.
How much is Anthropic worth?
The filing follows a run of enormous private capital raisings. Anthropic raised US$65 billion in a Series H round that valued the company at US$965 billion post-money, led by Altimeter Capital, Dragoneer, Greenoaks and Sequoia Capital, and co-led by Capital Group, Coatue, D1 Capital Partners, GIC, ICONIQ and XN. That figure is the price set in a private funding round, not an IPO valuation, and the company has said the offer price for any listing has not been set.
The product behind the numbers
The filing lands days after the company released its latest model, Claude Opus 4.8. The company describes it as an upgrade to the prior version at the same price, with a one-million-token context window on its main platforms and a “fast mode” it says runs at 2.5 times the speed and costs three times less than on earlier models. The company also reported benchmark results, including a score of 84 per cent on a test of computer and browser use, which it said was its strongest result on that measure. Benchmark figures are the company’s own, and AI capability claims are difficult for an outside party to verify.
Surfing the 2026 mega-IPO wave
Anthropic is not filing into a quiet market by any means. It joins a cluster of the largest private companies in the world moving toward public listings in 2026, potentially even into early-2027.
Elon Musk’s rocket boondoggle, SpaceX, is the furthest along so far. Its roadshow is reported to begin in the week of 4 June, with a Nasdaq listing under the ticker SPCX and a valuation reported in the range of US$1.8 trillion to US$2 trillion. Potentially making it the largest listing of all time.
Meanwhile, OpenAI, the maker of ChatGPT and the Sharks to Anthropic’s Jets is reported to be targeting a listing as early as September, after a private valuation of about US$852 billion disclosed earlier in the year.
What we don’t know yet
We’re missing a lot here still. There’s the when, the where, the how and of course, the how much. The company has not set a share count, a price, or a firm listing date, and it has said any decision to proceed will depend on market conditions when the time comes. Until the SEC completes its review and a public prospectus appears, the financial detail that would let investors judge the business, including its revenue and its losses, remains behind the confidential filing.
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