Anthropic IPO Seeks $1.4 Trillion Valuation on Nasdaq

Anthropic has put a price on itself. On Tuesday 10 November 2026, the artificial intelligence company behind the Claude chatbot filed an updated prospectus with the US Securities and Exchange Commission setting the price range for its initial public offering at $70 to $78 a share. At the top of the range, the deal values Anthropic at about $1.4 trillion on a fully diluted basis — and would raise up to $64.4 billion from public investors, before a separate $26 billion private placement.

That makes it one of the biggest listings ever attempted. It also makes it a test. Anthropic is going public in a week when investors have been selling AI shares hard, and at a valuation well below the $2 trillion figure that circulated only weeks ago. The filing tells the story of a company growing at extraordinary speed, losing money at extraordinary speed, and asking the market to believe the first matters more than the second.

The deal in numbers

The offering consists of 825 million Class A shares. Anthropic itself is selling 801,351,354 of them, and some existing shareholders are selling a further 23,648,646. At $70 a share the public offering raises about $57.75 billion; at $78 it raises about $64.35 billion. The underwriters — Goldman Sachs and Morgan Stanley are leading the deal — hold an option to buy up to 123.75 million additional shares at the IPO price.

The headline valuation needs care, because two different numbers are in circulation. On a fully diluted basis — counting stock options, restricted stock and other securities that could become shares — the top of the range implies a value of about $1.4 trillion. Counting only shares actually outstanding, the figure is closer to $1 trillion. Both are correct; they measure different things. Either way, the listing would rank among the largest in stock market history.

Alongside the public offering, Anthropic is raising a further $26 billion through a separate private placement. Seven strategic partners — Google, Nvidia, Advanced Micro Devices, Broadcom, Micron Technology, Microsoft and TSMC — have agreed to buy Class N non-voting stock at the IPO price. Taken together, the public offering and the private placement could bring in about $90 billion.

The shares are expected to trade on the Nasdaq Global Select Market under the ticker symbol ANT. Pricing is expected on 18 November, with the first day of trading on 19 November, according to Reuters and Fortune reporting on the roadshow.

A valuation that has already come down

The $1.4 trillion figure is lower than the numbers discussed only weeks ago. In the autumn, talk in the market put Anthropic's value at about $2 trillion. By mid-October the range discussed was $1.5 trillion to $2 trillion, then $1 trillion to $1.5 trillion. The company's last private funding round, in May, valued it at $965 billion. The filed range lands almost exactly on that May figure at its midpoint — the market, in other words, is being asked to pay roughly what private investors paid six months ago, not the premium that autumn talk implied.

The filing process itself had a wobble. Hours before Anthropic filed its updated prospectus on Tuesday, details of the offering were briefly circulated to investment banks late on Monday and then retracted, according to emails seen by Reuters. The preliminary terms showed the deal could raise as much as $69.3 billion. The updated prospectus contained different terms, with a lower price range and reduced proceeds. The episode is a reminder that the numbers in a listing can move until the moment they are filed — and that the final price is set by demand during the roadshow, not by the range in the prospectus.

Anthropic filed confidentially for the listing in June and made its prospectus public on 26 October. The roadshow — the series of meetings where the company pitches itself to big investors — began on 10 November, the same day the price range was set.

Growth that is hard to believe — and losses to match

The filing shows a business growing at a pace rarely seen at this scale. Anthropic's run-rate revenue — the annual revenue implied by its most recent month — reached roughly $81 billion as of 31 October, up from about $71 billion at the end of September, according to the filing. Revenue for the first nine months of 2026 was $33.2 billion, up more than 1,200% year over year. Revenue in the third quarter alone was $16.96 billion, up 47% from the previous quarter.

The other side of the ledger is just as striking. The filing shows a nine-month net loss of $104 billion, and compute and infrastructure commitments of $900.9 billion. Anthropic is spending enormous sums on the computing power needed to train and run its models — and it has committed to spending far more. That is the central tension in the investment case: the revenue curve is nearly vertical, but so is the cost curve, and the company is asking investors to fund the gap.

That tension is not unique to Anthropic. It is the question hanging over the whole AI industry: whether the money pouring into data centres, chips and power will earn a return, and how quickly. Anthropic's answer, in effect, is that its growth justifies the spending — and that the $26 billion private placement from the very companies that supply its chips and cloud capacity is a vote of confidence from the people who know the business best.

Why the timing matters

Anthropic is listing into a falling market. The Nasdaq fell 5.5% last week, including a single session that erased nearly $2.5 trillion in market value, according to Fortune. AI-related shares have been hit hardest, as investors question whether the spending boom is producing returns fast enough. Reuters framed the listing as a defining test of Wall Street's faith in the boom that Anthropic itself helped ignite.

The test cuts both ways. A strong listing — priced at the top of the range, trading up on the first day — would be read as proof that investors still believe in AI's biggest names. A weak one — priced low, or falling after trading starts — would be read as the opposite, and would be felt across the sector, because Anthropic is one of the three companies, alongside OpenAI and Google, that define the frontier of the technology.

There is also a comparison in the background. SpaceX, which listed in June, sought a valuation of about $1.75 trillion. Anthropic's filed top is below that. The market will decide in the coming days whether the gap is a bargain, a warning, or simply the difference between two very different businesses.

What happens next

Three dates matter. The roadshow runs through the coming week, with the book of orders closing after it ends. Pricing is expected on Wednesday 18 November. Trading is expected to begin the next day, Thursday 19 November, on the Nasdaq under the ticker ANT.

What to watch is not only the price. Watch the size of the order book — whether big investors want in at $78 or only at $70. Watch whether the underwriters exercise their option for extra shares. And watch the first day of trading: a listing this large, in a market this nervous, will be judged within hours.

For ordinary readers, the listing matters for a simpler reason. Anthropic's Claude is one of the chatbots millions of people now use every day, at work and at home. A public listing means its finances, its risks and its strategy will now be reported every quarter, in public, like any other large company. The company that has so far been valued in private, behind closed doors, is about to be valued in public, every trading day.

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