Anthropic's initial public offering has attracted investor orders several times larger than the number of shares available, Bloomberg reported on Wednesday, a signal of extraordinary demand for what is shaping up to be the largest listing in the brief history of the AI industry. The report landed as the company and its underwriters entered the final stretch of a roadshow that has already forced bankers to reconsider the size of the deal.
According to regulatory filings cited in the Bloomberg report, Anthropic is seeking to raise as much as $90.4 billion through its IPO and a concurrent private placement, targeting a fully diluted valuation of approximately $1.4 trillion. The combined fundraising would exceed the size of SpaceX's planned IPO, which until now stood as the benchmark for the biggest market debut ever prepared. The company has emphasized that the final offering price, valuation and share allocation all remain subject to change as the bookbuild continues. For more context on this story, see our ongoing AI industry coverage.
Wall Street Bets Bigger
The offering is being led by Goldman Sachs and Morgan Stanley, with 20 additional banks participating in the syndicate. As part of the institutional marketing push, Anthropic is preparing an investor event featuring CEO Dario Amodei alongside JPMorgan Chase chief executive Jamie Dimon — an unusual pairing that underlines how far AI labs have moved into the mainstream of capital markets.
Demand has been strong enough that bankers are now preparing to increase the IPO valuation to $1.5 trillion or more, the Financial Times reported, citing people familiar with the preparations. Morningstar analysts published a note during the roadshow saying they see the stock as undervalued even within the current IPO pricing range, while Barron's framed the listing from the opposite angle: Microsoft's heavy bet on OpenAI looks increasingly awkward next to Anthropic's profit lead.
A Dual-Track Deal
The structure of the raise is unusual for a company of any size, let alone one preparing the largest listing on record. Anthropic is running two parallel transactions: a public offering, in which shares will be sold through the stock market listing, and a concurrent private placement, in which a separate allocation goes to eligible investors outside the public book. Regulatory filings cited by Bloomberg describe the two routes as distinct ways for investors to participate in the same equity raise, with proceeds depending on how many shares are ultimately sold at the final price.
For retail investors, the door has been opened earlier than usual. CNBC reported that Anthropic launched a retail IPO offering in Australia as scrutiny of the deal intensifies, and Yahoo Finance's market data pages list the company under the ticker ANT ahead of its expected Nasdaq listing. Most mega-deals of recent years have left ordinary investors waiting for the first day of trading; Anthropic's underwriters have instead built retail access into the deal itself in at least one market.
The Numbers Behind the Listing
Anthropic's amended IPO filing, disclosed in early November, showed quarterly revenue of $17 billion in the third quarter of 2026 alongside an operating loss of $567 million — a swing back into the red that publications including The Information attributed to a surge in spending, but on a loss profile that remains far smaller than those of its closest rivals. The filing also revealed the costs that came with the growth: company disclosures detailed roughly $5 billion in short-term compute commitments, and approximately $2 billion in non-cash charges linked to donations, according to figures circulated during the roadshow.
The New York Times, profiling the company's leadership in the run-up to pricing, reported that Anthropic's seven founders are each worth about $18 billion on paper at the targeted valuation — a figure that captures how dramatically the lab's value has compounded since its founding in 2021. A companion Times piece examined what it called the "clubby business of AI," describing how a tight network of investors, banks and executives has come to dominate the financing of the field's leading labs.
One disclosure added an unusual note to the final stretch of marketing: days before pricing, Anthropic said a key AI safety alarm had been triggered, according to Yahoo Finance — a reminder that the company listing its shares is also the one that has built its brand on studying its own systems for danger signs.
A Test Case for AI Valuations
The oversubscription arrives in the same week that OpenAI's investor documents showed a quarterly operating loss of $10.9 billion on $10 billion of revenue, a contrast that is likely to dominate the conversation when Anthropic's shares begin trading. For public-market investors, the IPO is the first chance to buy a frontier AI lab at scale, and the order book suggests they are prepared to pay a valuation that would rank among the largest companies in the world on day one.
Whether that enthusiasm survives contact with quarterly reporting is the open question. Anthropic's own filing showed revenue growth strong enough to overtake OpenAI's quarterly top line, but also renewed losses driven by compute spending. The listing is expected to price in the coming days, with the investor event featuring Amodei and Dimon still ahead on the calendar. If the current demand holds through pricing, Anthropic will not just set a fundraising record — it will hand the AI industry its clearest signal yet of what public markets believe a frontier lab is worth.
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