Anthropic IPO: Claude Maker Files for a $1.5 Trillion Listing as AI Spending Faces Its First Real Test

The Anthropic IPO is set to be one of the biggest stock market listings in history. The company behind Claude, the artificial intelligence assistant used by millions of people and thousands of businesses, has filed to list its shares on the Nasdaq stock exchange — and investors are now arguing over whether it is worth $1.5 trillion.

Anthropic filed its public prospectus, known as an S-1, with the US Securities and Exchange Commission on 26 October 2026. On 2 November it filed an amended version that added its results for the third quarter of the year. The numbers inside are startling in both directions: revenue is growing at a speed few companies have ever reached, while the bill for the computing power behind that growth is growing even faster.

The filing sets no share price, no number of shares and no listing date. But reports say the company plans to start marketing the shares to investors in the week of 9 November, with trading possibly beginning before Thanksgiving on 26 November. If it goes ahead at the values being discussed, it would be one of the largest IPOs ever — and a test of whether the world’s biggest bet on artificial intelligence is worth the price.

At a glance

• What happened: Anthropic, the maker of the Claude AI assistant, filed an amended IPO prospectus on 2 November 2026, adding its third-quarter results.
• Where it will list: Class A shares on the Nasdaq Global Select Market, under the ticker symbol ANT.
• The numbers: Revenue reached $16.96 billion in the three months to 30 September 2026, up from $1.38 billion a year earlier. But the company has committed to spend $895.4 billion on computing power and infrastructure.
• The valuation question: Anthropic was valued at $965 billion in a private funding round in May 2026. Reports have discussed an IPO value of $1.5 trillion to $2 trillion, but some investors are now pushing for the lower end of that range.
• What happens next: The roadshow to investors can start on 10 November at the earliest. Reports point to a listing before Thanksgiving, but Anthropic has not confirmed a date.

What is Anthropic?

Anthropic was founded in 2021 by a team of researchers who had previously worked on AI at other companies. It is based in San Francisco and its main product is Claude, a family of AI models that people and businesses use to write, analyse documents, answer questions and build software.

Claude competes directly with OpenAI’s ChatGPT and Google’s Gemini. Unlike those rivals, Anthropic has never been a public company, so ordinary investors have had no way to buy shares in it. The IPO would change that: it would give the public its first chance to own a direct stake in one of the leading AI labs, rather than buying shares in the big technology companies that invest in them.

The company sells access to Claude in two ways. Most of its money comes from “pay per use” — clients pay for the amount of computing their requests consume. The rest comes from subscriptions, where individuals and companies pay a fixed fee for a set amount of use. In the first nine months of 2026, pay-per-use brought in $26.30 billion, or 79 percent of revenue, and subscriptions brought in $6.94 billion, or 21 percent.

Its customers are mostly large companies. Clients that spent at least $100,000 with Anthropic over the past year produced $24.5 billion of revenue in the first nine months of 2026 — 74 percent of the total. There were more than 11,900 such clients by 30 September, up from more than 950 a year earlier. According to the filing, every company in the Fortune 10, more than half of the Fortune 500 and more than 30 percent of the Global 2000 are now Anthropic customers.

What the filing actually shows

The amended filing, known as an S-1/A, is the most detailed look the public has ever had at Anthropic’s finances. The headline figures are remarkable.

Revenue for the first nine months of 2026 reached $33.24 billion, against $2.55 billion in the same period of 2025. In the third quarter alone, revenue was $16.96 billion — up 47 percent on the second quarter’s $11.56 billion, and more than twelve times the $1.38 billion recorded in the same quarter a year earlier. The $5.4 billion added in a single quarter is more than the company’s entire revenue for 2025.

But growth is not the whole story. The second quarter of 2026 was Anthropic’s first profitable quarter, with an operating profit of $974 million. In the third quarter, that turned into an operating loss of $567 million. The operating margin fell from 8 percent to minus 3 percent.

The main reason was the cost of computing power. In the third quarter, Anthropic spent $5 billion on short-term computing contracts, which cost much more than long-term agreements. It also booked about $2 billion in non-cash costs for a charitable programme. The Wall Street Journal reported that revenue was also partly offset by about $600 million in price cuts from new model versions and contractual discounts.

Over the nine months, spending on computing and infrastructure rose from $4.38 billion to $18.81 billion. Because sales grew even faster, computing costs fell from 172 percent of revenue to 57 percent — but in the third quarter the share rose again, from 48 percent to 58 percent. The company’s profitability can swing sharply with the timing of new servers and the price of each contract.

The filing also reports a very large net loss: $104.04 billion for the first nine months of 2026. Almost all of it comes from a $94.32 billion accounting charge for the revaluation of bonds that can convert into the company’s shares. These are accounting entries, not cash the company spent — without most of them, adjusted net income came to $5.59 billion.

On a cash basis, the business looks healthier. Free cash flow for the first nine months of 2026 was about $5.64 billion, against an outflow of $2.14 billion a year earlier. At 30 September, Anthropic held about $132 billion in cash and short-term investments.

The $895 billion bill

The most striking number in the filing is not the revenue. It is the spending commitment: $895.4 billion.

Counting short-term agreements, leases, contracts that have not started yet and contracts signed after 30 September, Anthropic has committed to spend $895.4 billion, almost all of it on computing power and infrastructure. About $447.5 billion of that falls due before the end of 2030 — roughly half the total in just over four years.

This is the heart of the Anthropic IPO debate. To train and run models like Claude, the company needs vast amounts of computing power: data centres full of specialist chips, running around the clock. It does not own most of that capacity. It rents it, through long-term contracts with cloud providers and chip suppliers, and those contracts lock in payments for years ahead.

The risk is simple. Most of Anthropic’s revenue depends on how much clients use Claude. If a competitor releases a much stronger model and clients move away, revenue could fall fast — while the payments for servers stay the same. The company would then have to raise new money, borrow more, or issue new shares, which would dilute existing shareholders.

Amazon and Alphabet, the parent company of Google, sit on both sides of this deal. They are Anthropic’s investors, its computing suppliers and its sales channels at the same time, because many customers buy Claude through Amazon Web Services and Google Cloud. In the first nine months of 2026, Anthropic paid $4.8 billion more in fees to sales and cloud partners than a year earlier. The arrangement helps Anthropic reach clients quickly, but it also ties the company closely to two firms that build their own competing AI products.

What is Anthropic worth?

This is the question that will decide whether the IPO succeeds — and nobody agrees on the answer yet.

The last valuation Anthropic has confirmed is $965 billion, set in a private funding round in May 2026 that raised $65 billion. Since the public filing, reports have put the possible IPO valuation between $1.5 trillion and $2 trillion. At $1.5 trillion to $2 trillion, the company would cost about 43 to 57 times its revenue for the last twelve months. For comparison, the chipmaker Nvidia was valued at about 16.6 times its yearly revenue at the close on 3 November.

But the number has been moving down, not up. Reuters reported on 3 November that some current and prospective investors are now weighing a valuation of about $1.5 trillion, down from roughly $2 trillion, after the company disclosed detailed financials at a recent investor event. The Wall Street Journal reported that institutional investors are pushing for a valuation closer to $1.5 trillion to $1.6 trillion, after last week’s sharp falls in technology stocks.

If the listing goes ahead at around $1.5 trillion, it would still be one of the largest IPOs in US market history. It could even eclipse the record set by SpaceX, which raised $86 billion in its June debut at a valuation of about $1.77 trillion. Anthropic is reportedly aiming to raise $100 billion or more, according to reports from August.

Who is running the listing?

Anthropic has hired 22 banks as underwriters for the IPO, led by Goldman Sachs and Morgan Stanley. The filing says Anthropic itself will offer new shares, and existing shareholders will sell part of theirs, including co-founders Dario Amodei and Daniela Amodei and other early executives. Their share counts have not been disclosed yet.

Part of the offering is set aside for individual investors, through brokers including Charles Schwab, Fidelity, Robinhood, Trade-PMR, SoFi and E*TRADE. The size of that part has not been stated. Anthropic also plans an Australian retail share offer, with Commonwealth Securities acting as lead Australian retail broker — but it will not list on the Australian Securities Exchange. Its shares will trade only on the Nasdaq, under the ticker ANT.

The risks Anthropic itself flags

Every IPO prospectus contains a section on risks, and Anthropic’s is unusually frank. The filing details the risks posed by increasingly powerful AI, from potential misuse and security threats to concerns that advanced systems could produce outputs that “could be interpreted as coercive, deceptive, or manipulative”.

Other risks are more ordinary, but no less real. The company depends on a small number of large customers. Its costs depend on the price of computing power, which it does not control. Its biggest partners are also its biggest competitors. And its entire business rests on staying ahead in a race where the leading model can change in a matter of months.

There is also a risk that has nothing to do with Anthropic at all: the market. The IPO is expected before Thanksgiving, but the filing itself gives no date, and market conditions can still change the plan. If tech stocks keep falling, the listing could be delayed or priced lower than hoped.

What happens next

Under US securities rules, a company that submitted its draft filing confidentially must make the filing public at least 15 days before the roadshow. With the prospectus published on 26 October, the roadshow can start on 10 November at the earliest. Reuters reported that marketing to investors is expected in the week of 9 November, with pricing possible in mid-November.

That schedule puts the listing in the week before Thanksgiving, if market conditions hold and regulators clear the way. The price range, the number of shares and the amount to be raised will all be disclosed when the roadshow begins — and those numbers will tell investors how confident Anthropic really is.

The listing is also expected to set a benchmark for how Wall Street values leading AI companies, including OpenAI, which remains private. If Anthropic lists at $1.5 trillion, every other AI company will be measured against that number. If it struggles, the whole sector’s valuations will be questioned.

For readers in Pakistan and around the world, the listing matters for a simpler reason. Claude and its rivals are becoming part of everyday work — writing, coding, research, customer service. The IPO will show whether the companies building these tools can turn extraordinary growth into a sustainable business, or whether the huge spending on computing power will catch up with them first. The answer will shape the price and the pace of the AI tools millions of people now use every day.

Frequently asked questions

What is the Anthropic IPO?

Anthropic, the company behind the Claude AI assistant, has filed to list its shares on the Nasdaq stock exchange under the ticker symbol ANT. It filed its public prospectus on 26 October 2026 and an amended version with third-quarter results on 2 November.

When will Anthropic list on the stock market?

No date has been confirmed. The roadshow to investors can start on 10 November at the earliest, and reports point to a listing before Thanksgiving on 26 November, if market conditions allow.

How much is Anthropic worth?

The last confirmed valuation is $965 billion, from a private funding round in May 2026. Reports have discussed an IPO valuation of $1.5 trillion to $2 trillion, with some investors now pushing for about $1.5 trillion to $1.6 trillion.

How much money does Anthropic make?

Revenue reached $16.96 billion in the three months to 30 September 2026, up from $1.38 billion a year earlier. Revenue for the first nine months of 2026 was $33.24 billion, against $2.55 billion in the same period of 2025.

Why did Anthropic report such a big loss?

The company reported a net loss of $104.04 billion for the first nine months of 2026, but almost all of it was a non-cash accounting charge for the revaluation of convertible bonds. Without most of those charges, adjusted net income was $5.59 billion. The operating result was a loss of $567 million in the third quarter, after a $974 million operating profit in the second quarter.

What is the $895 billion figure?

Anthropic has committed to spend $895.4 billion on computing power and infrastructure, mostly through long-term contracts for data centres and chips. About $447.5 billion of that falls due before the end of 2030.

Can ordinary investors buy Anthropic shares?

Part of the offering is set aside for individual investors through brokers including Charles Schwab, Fidelity, Robinhood, SoFi and E*TRADE. Anthropic also plans a retail share offer in Australia. The shares will trade on the Nasdaq under the ticker ANT.

Sources

• RoboForex — https://roboforex.com/blog/anthropic-ipo/anthropic-ipo/
• Al Jazeera — https://aljazeeranews-3fuh52rgrl.edgeone.app/economy/2026/10/26/anthropics-ipo-filing-shows-explosive-growth-risks-and-staggering-costs
• WNCY — https://wncy.com/2026/11/02/anthropic-plans-australian-share-offer-in-ipo-commsec-says/
• The AI Tools — https://www.theaitools.tech/2026/11/anthropic-ipo-filing-explained.html
• Tech Times — https://www.techtimes.com/articles/329931/20261103/anthropic-ipo-filing-shows-revenue-growth-slowing-investors-cut-target-valuation.htm
• MEXC — https://www.mexc.com/learn/article/is-anthropic-really-worth-965-billion-anthropic-ipo-valuation-every-round-and-who-owns-what/1
• Dealroom — https://dealroom.co/charts/anthropic-ipo?preview=1&embed=1&theme=light
• The Frontier — https://thefrontier.fm/article/2026/11/02/anthropics-ipo-puts-growth-engine-trial

This article is for general information and education only. It is not legal or financial advice.