The Price of the AI Boom: Anthropic’s Mega-IPO Tests Wall Street’s Conviction

Prospective buyers of Anthropic’s initial public offering are challenging a valuation around $1.5 trillion after a sharp selloff in technology shares, turning the proposed listing into a test of how much investors will pay for AI’s expected growth. The pressure is real in several independently reported accounts; a final price cut, postponement or reduction in the offering has not been announced in the sources examined.

Bloomberg reported on 6 November that potential buyers were discussing valuations of about $1.2 trillion to $1.3 trillion, with some considering as little as $1.1 trillion. Those are indications from people familiar with the discussions, not an agreed price or a formal offering range.

The distinction is central to the story. Anthropic’s prospectus describes an enormous potential market for advanced AI, but buying exposure to that opportunity is not the same as earning a return from it. The dispute is increasingly about how much future success the entry price already assumes.

Investor resistance is not a final valuation

The Wall Street Journal reported that three major investors planning to participate believed the expected $1.5 trillion valuation would probably need to fall; one suggested closer to $1 trillion. Its report, republished by Mint on 6 November, also said executives and advisers were expected to meet within days to consider their options, including raising less money. The investors were not named.

Reuters independently reported on 5 November, citing four people familiar with investor discussions, that prospective buyers were questioning whether the company could begin its roadshow the following week and complete a November listing. Some regarded $1.5 trillion as the upper end of expectations. Anthropic declined to comment to Reuters on those doubts.

There is countervailing reporting. A Financial Times report on 6 November, summarised in a Benzinga news alert, said Anthropic intended to press ahead before Thanksgiving while targeting $1.5 trillion. That does not establish that buyers will accept the figure. It does show why differing accounts of investor preferences and company intentions should not be compressed into a single, settled valuation.

Anthropic’s own 26 October announcement said the number of shares and price range had not been determined. The amended prospectus filed on 2 November still left those terms blank. Reported negotiations are therefore not a markdown of an already priced public offering.

A record-sized ambition meets a different market

Reuters said the roadshow had initially been expected in the week beginning 9 November, with pricing the following week—the week before US Thanksgiving on 26 November. It reported that some expected the offering to reach $100 billion, while warning that continuing market pressure could lead the company to wait. These remain reported plans and possibilities, not a guaranteed timetable.

At $100 billion, the offering would exceed the $85.7 billion that SpaceX raised in June after underwriters exercised their overallotment option, according to CNBC’s 15 June report, which identified SpaceX’s debut as the largest IPO. Anthropic’s upper-end ambition should not be confused with an achieved record; a smaller sale would require a fresh comparison.

The market backdrop changed sharply on Thursday, 5 November. Reuters reported that the Nasdaq 100 fell 6.4%, erasing $2.5 trillion in market value. The broader Nasdaq Composite fell about 5.5%. The $2.5 trillion figure in that report belongs specifically to the Nasdaq 100, rather than to every company listed on Nasdaq.

Reuters linked the selling to concerns that the US midterm election results could slow data-centre expansion, alongside existing worries about financing and returns on AI investment. Market losses do not prove that demand for AI services has collapsed. They do change the alternatives and risks investors consider when deciding whether to commit to a new issue.

Fast growth does not settle the price

Anthropic’s amended filing supplies a substantial operating business behind the expectations: $17 billion in revenue for the three months ended 30 September. CNBC calculated that as roughly 47% growth from the previous quarter—still rapid, but slower than the sequential growth rates in the first two quarters of 2026.

The same filing discloses approximately $895.4 billion in purchase commitments and lease agreements entered into as of and after 30 September, substantially all related to computing and infrastructure. About $447.5 billion was expected to be incurred before the end of 2030. Those are commitments across multiple years, not a single year’s expenditure or money already spent.

This is the tension public investors must assess: growing usage can support a much larger business, while capacity commitments create obligations before the eventual returns are known. Anthropic itself warns that historical growth rates are not indicative of future performance and that inadequate computing capacity could constrain its business.

Price, proceeds and timing are different choices

For a fixed amount of newly issued equity capital, a lower valuation generally requires selling a larger ownership interest. A smaller raise can reduce the amount investors must absorb, but also leaves less fresh capital for the issuer. Waiting preserves the option of a better market, without guaranteeing one. None of those choices, by itself, demonstrates that the underlying technology has failed.

The decisive evidence will be a formal price range, offering size and timetable, followed by actual investor commitments. Anthropic’s prospectus makes the scale of its ambition explicit. The negotiations now test a narrower proposition: whether that ambition leaves enough prospective return for buyers at the price being asked.