Anthropic files prospectus ahead of IPO with "ANT" ticker on Nasdaq. The launch date and price remain a mystery

Anthropic, the company that created the Claude AI model, filed its public prospectus (S-1) with the U.S. Securities and Exchange Commission (SEC) today. This was a major surprise because people had earlier expected the filing last Friday. It was also published before trading began on Wall Street. This is an important step toward the company's stock market debut on Nasdaq, where it plans to trade under the symbol ANT. Anthropic is the first company focused on developing the most advanced AI models, often called frontier AI, to go public. According to Bloomberg, its IPO could match or even beat SpaceX's record-breaking offering. However, the launch date, share price range, and company valuation are still unknown. The prospectus does reveal other important details, including financial results and when the roadshow might begin.

Key details from the prospectus:

• Ticker and exchange: ANT, Nasdaq Global Select Market.
• Debut date: Not yet known. According to Bloomberg, the official marketing campaign for the IPO, known as a roadshow, could begin as early as the week of November 9. The company aims to start trading before Thanksgiving, which falls on November 26.
• Price and valuation: Not yet announced. The expected share price range is usually published in an updated prospectus shortly before the roadshow begins.
• Offering size: No official figure has been announced. Sources cited by Bloomberg expect the IPO to be as large as or larger than SpaceX's offering.
• Underwriters: Goldman Sachs and Morgan Stanley.
• Timeline: Anthropic filed a confidential draft of its S-1 on June 1 and published the public prospectus on October 26.

Financial data (first half of 2026)

• Revenue: $16.29 billion, compared with $1.16 billion in the same period a year earlier. This is about 14 times as much.
• Operating loss: $693 million, compared with $2.14 billion a year earlier. The operating loss is about 4% of revenue.
• Net loss: $80.75 billion, compared with $12.97 billion a year earlier.
• Customers paying more than $10 million a year over the last 12 months: About 250.
• Customers paying more than $1 million a year: More than 1,900 as of September 30.
• Customers paying more than $100,000 a year: The number rose from 950 to more than 11,900 in one year.
• Minimum future payment commitments: $245 billion, mainly from agreements to lease computing capacity.

How the company is governed:

• Anthropic is a Public Benefit Corporation. It also has a Long-Term Benefit Trust, which selects directors who hold a special type of share called Class T.
• The founders have committed to donating 80% of their ownership shares to charitable causes.
• The company has promised to keep Claude free of ads.
• In the section about risks, Anthropic warns that its revenue growth may slow and may not last at its current pace. The company also expects costs to rise and losses to continue.

What the most important parts of the prospectus tell us

The biggest strength shown in the prospectus is how quickly revenue is growing. Revenue rose from $1.2 billion to $16.3 billion in one year. Growth on this scale is rare, even among the biggest technology companies. However, very fast growth is not unusual for companies in an early stage of rapid expansion. The type of customers behind this growth is also important. About 250 customers pay more than $10 million each year, and the number paying more than $100,000 grew by more than 12 times. This shows that large companies, rather than just individual users, are driving much of Anthropic's revenue. Unlike OpenAI, Anthropic mainly serves business customers.

Investors should also look closely at the huge difference between the operating loss of $693 million and the net loss of $80.75 billion. Based on its operating results, the company is close to breaking even, and similar figures could appear for the third quarter. The net loss of more than $80 billion must therefore come from items outside normal business operations. Investors need to examine the full S-1 filing to understand exactly what caused it. One key question is whether these costs are one-time accounting effects linked to the company's financing before its IPO or expenses that will keep happening.

Another major issue is the $245 billion in future payment commitments. This is about 15 times its revenue for half a year. The race to develop AI requires huge spending on computing power. By going public, Anthropic could raise money by selling shares instead of borrowing more. This matters because investors are becoming more worried about AI companies using debt to pay for expansion. Standard Chartered estimates that debt will account for 40% of AI spending in 2027, up from 25%. Meta, meanwhile, has announced plans to issue shares worth tens of billions of dollars.

However, the timing of the IPO is difficult. Nasdaq has just had its worst week since April 2025. The AI industry is also facing closer scrutiny after several widely reported incidents involving autonomous AI agents. These concerns have even become a topic in the U.S. midterm election campaign. The IPO's valuation and share price range will help show whether investors are still eager to invest in AI or are willing to pay high prices for growth despite continuing losses. These details will likely become available in early November, when the roadshow is expected to begin.

Market reaction

Nasdaq 100 futures are down 0.15% today. When the prospectus was published, shortly after 2:00 PM Central European Time (CET), Nasdaq 100 futures rose slightly. Since then, however, they have continued to fall.

What happened to Nasdaq 100 futures after other major companies filed their IPO prospectuses? There is no clear pattern. However, over a longer period of three months, futures on the technology index generally recorded strong gains. SpaceX was a notable exception.

The picture is much worse when we look at how the actual share prices of companies performed after their IPOs. Recent major IPOs have usually seen large price drops during their first trading sessions. This is often linked to companies being valued at very high prices when they first go public.