Anthropic Goes Public: Claude Maker Files for What Could Be the Biggest IPO in History

Anthropic Goes Public: Claude Maker Files for What Could Be the Biggest IPO in History

An S-1 lands, and a ticker is born: ANT

Anthropic publicly filed its Form S-1 with the U.S. Securities and Exchange Commission on October 26, 2026, applying to list Class A common stock on the Nasdaq Global Select Market under the ticker ANT. The Next Web reports that Goldman Sachs and Morgan Stanley lead a syndicate of 22 banks, with the share count and price range left blank. The public filing follows a confidential draft submitted on June 1, 2026, when the company said any offering would depend on market conditions.

Revenue up thirteenfold to $16.3 billion in half a year

The prospectus shows $16.29 billion in revenue for the six months ended June 30, 2026, against $1.16 billion a year earlier — roughly a thirteenfold jump — and $4.59 billion for full-year 2025, itself up from $386 million in 2024. CNBC's reading of the filing breaks the first-half figure into about $13.1 billion of consumption-based revenue, or 80%, and $3.2 billion of subscriptions. Headcount stood at 5,300 on September 30, 2026, versus 940 at the end of 2024.

An $80.7 billion loss, mostly on paper

The same filing books an $80.7 billion net loss for the first half of 2026, versus $12.9 billion a year earlier, and about $41.9 billion for full 2025. The red ink is dominated by non-cash charges tied to the revaluation of financial instruments as the company's own valuation soared, not by operating cash burn. Anthropic reports $112.4 billion in cash and equivalents plus $19.3 billion in short-term investments as of June 30, after raising $141.1 billion in aggregate — including $65 billion in May 2026 at a $965 billion private valuation.

One founders' share controls half the votes

Anthropic will remain a public benefit corporation with what it calls a governance structure that "has no direct public company precedent." A vehicle owned by the seven co-founders holds a single Class F share carrying 50.1% of votes on ordinary shareholder matters, undiluted by future issuance, while a Long-Term Benefit Trust elects a board majority through a Class T share. The filing concedes the arrangement may entrench directors and deprive stockholders of takeover premiums.

A prospectus that warns its own product could endanger humanity

Nearly a third of the filing is risk disclosure, warning that sufficiently advanced AI could pose "catastrophic or existential risks to humanity" absent safeguards, with models capable of self-preserving behavior such as resisting shutdown or concealing information. Variety and The Hollywood Reporter note the document also flags hostile media narratives — job displacement, misuse, existential doom — as a standing business risk. Weeks earlier, CEO Dario Amodei published an essay urging a slowdown of frontier-model development and told the UN Security Council that AI is the world's most pressing security issue.

A $2 trillion target takes aim at SpaceX's record

Private investors valued Anthropic at $965 billion earlier this year; reports cited by the Associated Press now point to $1.5 trillion or even $2 trillion, with up to $100 billion raised — surpassing the record set by Elon Musk's SpaceX earlier this year. At $1.5 trillion, the five-year-old startup would rank alongside Tesla among the world's most valuable listed companies. Fortune's share-by-share tally puts the seven founders at about 1.7 billion shares combined; Forbes puts Dario Amodei, 43, and his sister and president Daniela Amodei, 39, at $15.5 billion each, while Fortune's share-by-share tally sees each co-founder roughly doubling their fortune at listing.

November debut penciled in, giant compute bills await

A Nasdaq debut in the week of November 16 is a reported target, not a confirmed date. Whatever the timetable, the money has destinations: disclosed commitments of at least $110 billion to Amazon through April 2036 and at least $44.9 billion to Microsoft from November 2026 to May 2033 for computing capacity. The founders have pledged most of their equity wealth to charity — a promise whose size now depends on where ANT prices.