Anthropic told its bankers late Monday that the IPO pricing details it had just sent them were wrong, forcing a retraction of draft terms hours before the company filed a corrected registration statement and launched its roadshow, Reuters reported.

The episode gives Wall Street an unusually public look at the mechanics of one of the largest technology listings ever attempted — and at the pressure a steep AI-sector selloff has put on the deal's numbers.

What went wrong with the first set of terms?

An Anthropic representative emailed bankers a version of the registration paperwork indicating the company intended to offer roughly 866.7 million Class A shares priced between $70 and $80 apiece, according to Reuters. A follow-up email said the pricing figures were incorrect and that the company planned to revise the document at a later date.

The second email gave no indication of which details were mistaken. Reuters could not establish what the error was. Anthropic declined to comment.

Under the retracted version, Anthropic would have sold 843.3 million shares and existing shareholders 23.3 million. At the upper limit of that band, $80 a share, the offering would have raised $69.3 billion — a figure that would have ranked among the biggest IPO proceeds on record.

What does the corrected filing say?

Anthropic filed an amended registration statement dated Tuesday that lists 825 million shares of Class A common stock in total, priced at an estimated $70 to $78 a share. The terms differ from the retracted version on both counts: 41.7 million fewer shares at the top end, and a ceiling $2 lower.

The corrected allocation breaks down as follows:

• Anthropic itself is selling 801,351,354 Class A shares.
• Selling stockholders are offering 23,648,646 shares — roughly 2.9% of the total.
• The estimated initial price range is $70 to $78 per share.
• The company has applied to list on the Nasdaq Global Select Market under the ticker "ANT."

At the top of the new band, the offering would raise approximately $64.4 billion before any overallotment — about $4.9 billion less than the retracted terms implied.

Who is buying the $26 billion private placement?

The amended filing discloses that seven of Anthropic's strategic partners and backers have agreed to purchase an aggregate $26.0 billion of the company's Class N common stock in a private placement tied to the IPO. The named investors are:

• Google
• Nvidia
• Advanced Micro Devices
• Broadcom
• Micron Technology
• Microsoft
• TSMC Partners

The price per share in the placement would equal the IPO price, meaning the cornerstone investors are locking in the same economics as public buyers rather than paying a discount. The placement is scheduled to close immediately after the offering, and it is contingent on the offering's completion and other conditions. The $26 billion commitment from the industry's largest chipmakers, cloud providers and designers functions as a floor of demand under the deal.

How far have valuation expectations fallen?

The retraction lands as Anthropic's valuation expectations have fallen sharply. Prospective buyers were discussing a range of $1.2 trillion to $1.3 trillion for the company, according to Reuters — down from $1.8 trillion to $2 trillion when Anthropic began targeting a listing before the November 26 Thanksgiving holiday. At the start of October, investors had put the figure at as much as $2 trillion.

That is a cut of roughly a third to the midpoint of the discussed range in under two months.

The repricing tracks the broader market. The Nasdaq 100 fell 6.4% in a single session last week, erasing $2.3 trillion of market capitalization in one day — the sharpest single-session destruction of value the index has recorded, and a direct hit to the comparable valuations investors use to price AI listings.

What happens next?

Anthropic launched its roadshow on Tuesday and is expected to set a final price the following week, according to Reuters. The amended terms — fewer shares, a lower band — suggest a company calibrating the deal for a market that has turned against AI stocks in the weeks since it first targeted the listing.

The math for retail observers: even at the reduced range, a pricing at $78 a share on 825 million Class A shares implies a public float worth about $64 billion, before counting the $26 billion strategic placement that follows immediately after.

For the banks, the immediate question is procedural: whether Tuesday's corrected filing fully closes the episode the Monday emails opened. The company has not said what the original mistake was, and Reuters could not determine it.

Anthropic declined to comment.