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Anthropic officially files for its public debut

AI1 min read

Anthropic, the AI company behind the Claude chatbot, has officially filed to go public on the U.S. stock market. It plans to trade under the ticker "ANT."

The company files to go public

Anthropic filed its IPO paperwork on Monday. An IPO, or initial public offering, is when a private company first sells shares to ordinary investors on a stock exchange. The filing is called an S-1. Earlier, copies of the S-1 had leaked online for weeks. The company has not yet said how much money it wants to raise or what its share price will be.

Key numbers from the filing

  • Revenue for the first half of 2026: $16.3 billion, up from $1.2 billion in the same period of 2025.
  • Operating loss (money lost from normal business work) for the first half of 2026: $693 million, down from $2.1 billion a year earlier.
  • Net loss (total loss after all costs and adjustments): $80.7 billion, mostly from noncash accounting changes tied to convertible debt.
  • As of the end of September: more than 11,900 customers paying $100,000 or more a year, about 1,900 paying $1 million or more, and about 250 paying $10 million or more.

Who controls the company

Anthropic's seven co-founders will form a group called the "Founder LLC." Together they will hold 50.1% of the voting power, so they keep control even after the public owns shares. Anthropic says this helps protect its AI safety goals. A separate group, the Long-Term Benefit Trust, set up in 2023, will be able to pick most board members.

Why it matters

This is one of the most watched stock market debuts in recent U.S. history. Anthropic's revenue is growing fast, but it still loses money, and it warns it may not become profitable. Because the founders hold most of the votes, regular shareholders will have little real say. Critics point out that the company itself says its technology could pose "catastrophic or existential risks to humanity."

Glossary

IPO
Initial public offering: when a private company first sells its shares to the public on a stock exchange.
S-1
The main registration form a company files with the U.S. SEC before selling shares to the public.
Operating loss
The money a company loses from its main business, before some other costs and gains are counted.
Long-Term Benefit Trust
A group set up by Anthropic in 2023 to make sure the company follows its public benefit mission; it can pick most board members.
Anthropic
An AI company that builds large language models and the Claude chatbot.

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