Anthropic files for IPO in historic Nasdaq debut, revealing $16.3B in revenue and staggering $80.7B loss

Anthropic, the five-year-old AI startup behind Claude, has officially filed for an initial public offering, setting the stage for one of the largest stock market debuts in history. The company plans to list on Nasdaq under the ticker symbol “ANT,” according to its S-1 registration statement filed with the Securities and Exchange Commission (SEC) on Monday.

The IPO could value Anthropic at between $1.5 trillion and $2 trillion, according to market estimates reported by The Wall Street Journal. The company could raise $100 billion or more through the offering, potentially surpassing SpaceX’s record $85.7 billion IPO earlier this year. Anthropic has yet to disclose its proposed share price or the number of shares it plans to sell.

The filing offers a remarkable look inside one of the fastest-growing companies in the artificial intelligence industry. Anthropic generated $16.3 billion in revenue during the first six months of 2026, up from $1.16 billion a year earlier. But that growth came with an eye-catching $80.7 billion net loss, most of which stemmed from noncash accounting charges tied to the rising value of its convertible financing instruments.

Beneath that headline figure, Anthropic’s operating performance tells a different story. Its operating loss narrowed to $693 million from $2.14 billion a year earlier, even as demand for Claude and its AI coding tools surged among corporate customers.

The IPO arrives at a difficult moment for the broader AI industry. Wall Street is questioning whether enormous investments in data centers, computing infrastructure, and advanced AI models will generate sustainable returns. For Anthropic, the offering could become a defining test of investor confidence in generative AI economics.

Anthropic’s explosive growth comes with a staggering price tag

Founded in 2021 by Dario Amodei and a group of former OpenAI researchers, Anthropic has grown from a relatively small AI research startup into one of the industry’s most valuable private companies.

Its Claude models have gained traction among businesses, developers, and large enterprises seeking alternatives to OpenAI and Google’s AI offerings. Claude Code, the company’s AI coding assistant, has become a major contributor to that growth.

Anthropic’s IPO prospectus reveals that more than 11,900 customers were generating at least $100,000 in annualized revenue as of September 30, underscoring its growing presence in the enterprise market.

The financial details are striking. Of Anthropic’s $80.7 billion net loss in the first half of 2026, approximately $72.4 billion came from changes in the fair value of convertible notes and related financial instruments. These accounting adjustments largely reflect the company’s rising valuation rather than cash spent on daily operations.

Still, running a frontier AI company remains extraordinarily expensive. Anthropic has made more than $600 billion in computing infrastructure commitments, according to Reuters, highlighting the enormous financial demands of developing and operating advanced AI systems.

The company faces fierce competition from OpenAI and Google, and depends on major technology partners for computing capacity and distribution.

A historic IPO with unusual shareholder control

Anthropic’s public offering follows SpaceX’s record-setting Nasdaq debut earlier this year, which raised $85.7 billion. The timing puts another closely watched technology company in front of investors already questioning the sustainability of AI spending.

The filing reveals an unusual corporate structure that could attract scrutiny from prospective shareholders.

Anthropic’s seven co-founders, including CEO Dario Amodei and President Daniela Amodei, will collectively control 50.1% of shareholder voting rights through a special entity called Founder LLC.

A separate Long-Term Benefit Trust will generally have authority to appoint a majority of the company’s board. The arrangement reflects Anthropic’s public benefit corporation structure and its stated commitment to responsible AI development, but it limits the influence ordinary shareholders can exercise over corporate decisions.

The prospectus identifies risks ranging from competition and mounting infrastructure expenses to AI safety concerns, regulatory disputes, and reliance on major cloud providers.

Amazon and Alphabet remain important investors and strategic partners. Goldman Sachs and Morgan Stanley are leading the underwriting.

For Wall Street, the question goes beyond how much Anthropic is worth. Investors must decide whether one of the fastest-growing technology businesses can eventually turn extraordinary demand for AI into lasting profits.

Anthropic’s IPO may provide the clearest answer yet.