Anthropic IPO Prospectus: $70-$78 a Share, Reports Checked

§ 01What Reuters reported#

Seven minutes before the viral post, Reuters published an exclusive that begins: Anthropic’s plans are laid out “according to its IPO prospectus seen by Reuters.” Reuters reports the figures “here for the first time”. It does not report a public SEC filing.

The net loss needs its footnote. In Reuters’ words, the roughly $34 billion charge “reflected an increase in the estimated value of financing that could eventually turn into Anthropic shares, rather than money the company spent running its business.”

Reuters also reports concentration risk: “nearly a quarter of its revenue came from two customers last year.”

§ 02What the viral post got right, and what it added#

§ 03What is on the public record#

• SEC EDGAR: we searched for an S-1, S-1/A or draft registration naming Anthropic PBC, filed September 20 to 29. We found none as of 01:00 UTC on September 29.
• Anthropic: its last statement on a filing is the June 1 post “Anthropic confidentially submits draft S-1 to the SEC”. Its newest news post, dated September 28, is about a partnership with Infosys, not a filing.
• Timing: Reuters previously reported, citing sources, that the debut “is likely to be pushed to after the November US midterm elections”.

A confidential draft is not visible on EDGAR, so we cannot rule out a new confidential submission. What we can say: there is no public filing to read yet, and every figure above comes through Reuters.

§ 04October 1: a November target and a $42 billion loan#

Two reports moved the story on October 1, 2026. Bloomberg reported at 17:27 UTC, citing people familiar with the matter, that Anthropic “is seeking to go public as soon as the middle of November” after it pushed back its plans to list. The firm “could start formal marketing for its IPO as soon as the week of Nov. 9”, which would put the first trades before Thanksgiving on November 26. That fits Reuters’ earlier read that the debut would come after the midterm elections.

Earlier the same day, Reuters reported from the prospectus it had seen that Broadcom will lend Anthropic up to $42 billion to lease its chips. In Yahoo Finance’s account of the Reuters story, Broadcom is “lending up to $42 billion to Anthropic for its infrastructure buildout”, and Anthropic is estimated to become the chip designer’s largest compute customer by 2027. Broadcom designs the TPUs that Google supplies to Anthropic under the deal announced in April. “Up to” is a ceiling, not money already drawn.

Neither company has confirmed either report. A search of SEC EDGAR at 19:03 UTC on October 1 still shows no public S-1 from Anthropic, so both figures, like the ones above, come through press reports of a document that is not yet public.

§ 05October 15: $16.8 billion in Q3, and a lower valuation in the room#

On October 15, 2026, Reuters reported from Anthropic’s investor day in San Francisco, citing four people familiar with the matter. Anthropic told prospective IPO investors that its third-quarter revenue rose 45% from the second quarter to $16.8 billion, and that it was “profitable on an adjusted basis during the quarter.” Second-quarter revenue had been $11.6 billion, more than double the first quarter.

The growth is still large, but it is slower than the quarter before, and that is what some investors reacted to. Three of Reuters’ sources said attendees discussed a valuation of around $1.5 trillion, “a significant step down from the roughly $2 trillion valuation” investors had expected for the November share sale. That is investor talk reported by anonymous sources, not a price range: Anthropic has not set one publicly, and Reuters says Anthropic did not immediately respond to requests for comment. The Information had reported the lower valuation talk first.

The same story puts Anthropic’s commitments at “at least $518 billion over a decade for cloud services, computing and infrastructure.” Read next to an adjusted quarterly profit, that is the tension investors are pricing: the business is now large and, by Anthropic’s own adjusted measure, profitable, while the spending it has signed up for is larger still.

§ 06October 19: OpenAI tries to raise first#

Reuters reported on October 19, 2026, citing two people familiar with the matter, that OpenAI is “racing to secure investor commitments before rival Anthropic’s expected public market debut in mid-November”. The round is about $30 billion and could value OpenAI at over $1.4 trillion. SoftBank, Abu Dhabi’s MGX and other existing backers are in talks to join.

The reason given is the comparison. OpenAI wants to close “before Anthropic’s financial disclosures give investors a fuller picture of its business and invite comparisons between the two companies”, one person told Reuters. The two also count revenue differently: Reuters says OpenAI books it net of partner shares and has accused Anthropic of counting the gross value of contracts sold through cloud providers, while Anthropic says it follows established accounting practices. A capital markets lawyer not on the deal put it plainly: “It’s really a two-horse race in terms of being public.”

Nothing here is confirmed by either company. OpenAI declined to comment, and Anthropic did not respond, per Reuters. Anthropic’s public filing and listing date are still unannounced.

§ 07October 19: Eric Schmidt’s stake#

Bloomberg reported on October 19, 2026 that former Google chief executive Eric Schmidt owns around 1% of Anthropic from an early bet, citing people familiar with the matter. He put tens of millions of dollars into Anthropic’s Series A in 2021, when PitchBook data valued the company at $461 million. It is unclear whether he has sold any of it since, and “Schmidt and Anthropic declined to comment.”

The headline figure is arithmetic, not a disclosure. Investors indicated earlier in October that a fair value for Anthropic sits between $1.8 trillion and $2 trillion; at the top of that range, 1% is about $20 billion, and Bloomberg says the stake would lift Schmidt’s net worth by about a third to nearly $80 billion.

None of this comes from a filing: the stake, the percentage and the valuation range are all sourced to people familiar with the matter. A public S-1 would list holders above 5% and the directors’ and officers’ holdings, so a 1% outside investor may never appear by name.

§ 08October 20: a loss of more than $80 billion in the first half#

The Wall Street Journal reported on October 20 that it had seen a new draft of Anthropic’s IPO prospectus, and Reuters summarized it the same afternoon: “AI startup Anthropic recorded a net loss of more than $80 billion in the first half of this year, including $72 billion in accounting charges.” Polymarket’s post of the figure drew 1,700 likes within the hour.

The same footnote as the 2025 loss applies, only larger. Per Reuters, “The vast majority of this year’s net loss, $72 billion, resulted from accounting charges tied to changes in the value of convertible notes and other instruments the company issued to raise funding.” Take the charges out and the remaining loss is roughly $8 billion or more, by our subtraction, not a reported operating figure. The WSJ’s own summary leads with the growth and the risks: “a narrow customer base and uncertain access to much-needed computing power,” and a signal that Anthropic “could potentially spend $750 billion in the coming years on obtaining more computing capacity.”

The document is still not public. An SEC EDGAR full-text search for an S-1 or S-1/A naming Anthropic PBC, filed October 1 to 20, returned nothing at 20:44 UTC on October 20. Every figure here comes through the Journal’s reading of a draft, and Anthropic had not responded to Reuters.

§ 09October 21-22: a public S-1 as early as Friday#

On October 21, Yahoo Finance reported that “Anthropic ( ANTH.PVT ) is set to publicly file its S-1 investor prospectus as soon as Friday, according to three people familiar with the artificial intelligence firm’s plans.” Friday is October 23. A day later, Reuters reported a wider window: the prospectus public as early as late October, marketing to investors during the week of November 9, and the IPO in the middle of November, with the dates subject to change.

The two dates fit one rule. Yahoo notes that “companies using the confidential process must make their registration materials available 15 calendar days before the start of their formal investor roadshow.” Counting back 15 days from November 9, the start of Reuters’ marketing week, gives October 25, so a public S-1 around October 23 matches the schedule both outlets describe (our arithmetic).

Reuters also reports Anthropic now stands alone on the fall calendar: “A once-robust fall calendar for technology IPOs is down to just Anthropic.” A search of SEC EDGAR at about 20:51 UTC on October 22 still showed no public S-1 from Anthropic.

§ 10October 22: OpenAI’s round, at a lower number#

On October 22, CNBC reported that OpenAI is close to an up to $30 billion round at a $1.25 trillion pre-money valuation. “That valuation does not include new capital raised.” Investors from the United Arab Emirates and Coatue lead it, per people familiar with the deal, and CNBC says the financing is positioned as an “opportunistic” bridge ahead of a potential IPO. CNBC adds: “OpenAI told investors on Thursday that it is aiming to secure signatures by the end of next week, but the final size of the round is still being determined.”

The valuation in the newer report is about $150 billion lower than the one Reuters described three days earlier (our arithmetic on the two reported figures). Neither number is confirmed by OpenAI, and a round that is not yet signed can still change size or price.

§ 11October 26: the S-1 is public, and the reports held#

Anthropic filed under a new SEC filer, Anthropic, PBC (CIK 0002130357), not the entity our earlier EDGAR searches covered. Its announcement: “The number of shares of Class A common stock to be offered and the price range for the proposed offering have not yet been determined.”

The one figure this draft leaves open is the quarter Reuters reported most recently: the S-1’s revenue line for the three months ended September 30, 2026 is blank, and so are the price range and share count. Those arrive in an amended filing.

§ 12October 30: Blackstone expects a junk rating#

The Financial Times reported on October 30, 2026 that Blackstone, the anchor investor in a recent $63 billion deal to finance Anthropic’s chips, told investors in that deal it expects Anthropic to receive a “high” junk rating after its IPO. TechCrunch’s summary, posted at 21:52 UTC, says Blackstone had previously expected an investment-grade rating before 2027 and now expects a “double B range rating”, the top tier of speculative or junk grade. Anthropic and Blackstone declined to comment to TechCrunch.

Two limits on reading it. This is an investor’s forecast passed on to lenders, not a rating: no agency has rated Anthropic, and we read the FT figures only as other outlets summarize them, because the article is paywalled. And a rating matters for debt, not the share sale; it makes the borrowing behind Anthropic’s compute deals more expensive, which is the worry TechCrunch names.

§ 13November 2: the amended S-1#

The amended filing fills the quarter the first draft left blank. In its own words, Claude went “from $0 at commercial launch in the first quarter of 2023 to $17.0 billion for the three months ended September 30, 2026.” That is a little above the $16.8 billion Reuters reported on October 15.

The nine-month net loss is large because it includes non-cash items: the filing’s own pro forma table adjusts for stock-based compensation and for the change in fair value of convertible notes. The commitments line is the number most coverage led with; about half of it falls due before 2031 and the rest runs to 2045.

The same day, The Information reported that Anthropic is telling IPO investors its 15-person chip team uses Claude to speed up chip design. The amended S-1 does not say that. It says Anthropic depends “on third-party chip design and services companies for the design, manufacture, and support of certain custom accelerator platforms.” Claims that Claude designs chips “faster than AMD and Nvidia” trace to that one report, not to the filing.

§ 14November 5: investors push back on the valuation#

Two reports landed the same evening. Reuters, citing four people familiar with investor discussions, reported that potential investors are pushing for a more attractive valuation, with some seeing the recently discussed $1.5 trillion “at the high end of expectations.” The Wall Street Journal reported that major investors are “increasingly skeptical” the IPO can proceed at that valuation “after a deep market selloff tied to the unwinding of artificial-intelligence related bets.”

Reuters said Anthropic “may need to offer a bigger discount” to secure commitments, and that the company could delay the offering if AI-related assets stay under pressure. This is reporting on what investors think, not a decision: no filing has set a price range, and Anthropic has not announced a delay or a new valuation. The October revenue figure is the number to watch, because it is the one investors told Reuters they are waiting for.

Sources: Reuters, November 5; The Wall Street Journal, November 5.

§ 15November 6: pressing ahead, with a wider range#

Four reports landed after the Nasdaq 100 fell 6.4% on Thursday, November 5. The Financial Times, citing multiple investors, reported that Anthropic is continuing with plans for an IPO before Thanksgiving and expects to raise $80 billion to $100 billion at a valuation between $1.25 trillion and $1.75 trillion. One large investor told the FT: “My view is they will price it very conservatively, call it $1.5tn, and go up from there.” Others involved in the deal expected around $1.3 trillion.

Bloomberg, citing a person familiar with the matter, reported that some potential backers are discussing $1.2 trillion to $1.3 trillion, down from the $1.4 trillion to $1.5 trillion investors had told bankers earlier, and from estimates as high as $2 trillion in early October. CNBC quoted one investor calling $1 trillion to $1.25 trillion “a more likely valuation target”. The Information reported that Anthropic will proceed with its roadshow next week.

The reports agree on the direction and differ on the number. The FT range is wide enough to hold both the bullish and the cautious view; Bloomberg’s and CNBC’s sources sit at its bottom. All of it is investor talk relayed by reporters: Anthropic has not filed a price range, a share count or a listing date, and it has not announced a delay. One early backer told the FT the listing is “just one milestone along the way.”

Sources: Financial Times, November 6 (paywalled; read in a subscriber view); Bloomberg via Yahoo Finance, November 6; CNBC, November 6; The Information, November 6 (headline only).

§ 16November 9: pricing sent to bankers, then retracted#

Reuters published two reports on Monday, November 9. The first said Anthropic “is aiming to raise as much as $69.3 billion,” according to “a copy of a filing seen by Reuters on Monday.”

The second came later that night and changed the story. Anthropic “sent out and then retracted details of its blockbuster IPO filing,” Reuters reported, citing emails to bankers. The copy of the filing showed about 867 million shares at $70 to $80 a share. Anthropic then “followed up with an email saying details about the pricing were inaccurate,” and said it “would update the filing later.” Anthropic declined to comment to Reuters.

Reuters did not say which details were wrong. The share count, the price range or both could change, so $69.3 billion is not a confirmed target. Nothing is public either. At 02:44 UTC on November 10, SEC EDGAR listed nothing from Anthropic, PBC after the November 2 amendment.

Odaily, a crypto news site, separately reported 866,666,664 Class A shares at $70 to $80, citing market sources. Those figures match the copy Reuters describes. The arithmetic also matches the first report: 866,666,664 shares at $80 is $69.33 billion, and at $70 it is $60.67 billion.

The retracted figure was below the earlier reports: Reuters reported up to $100 billion on November 5, and the Financial Times reported $80 billion to $100 billion on November 6. A raise figure does not give a valuation in any case. That needs the total number of shares outstanding after the offering, which none of these reports states.

Sources: Reuters via The Star, November 9 (reporting by Echo Wang; the page first carried Reuters’ earlier one-sentence report, which we read at 01:55 UTC on November 10); Odaily, November 10; SEC EDGAR filing list for Anthropic, PBC.

§ 17November 10: a new draft, $70 to $78 a share#

On Tuesday morning Reuters reported a new set of numbers. “Anthropic’s IPO is set to raise as much as $64.4 billion, according to the latest draft prospectus seen by Reuters on Tuesday,” it wrote (report). Shares would be sold in “an indicative price band of between $70 and $78 per share”.

The draft adds a second source of money. Anthropic “will also raise $26 billion via a separate private placement deal with cornerstone investors”. A cornerstone investor agrees to buy a set amount of stock before the offering opens. Reuters names seven: Google, Nvidia, Advanced Micro Devices, Broadcom, Micron Technology, Microsoft and TSMC. With them, the offering “will raise a total of up to $90.4 billion”.

What changed from the copy Anthropic retracted on Monday night:

• The top of the range. $78 a share, down from $80.
• The maximum raise. $64.4 billion, down from $69.3 billion. That is $4.9 billion less, about 7%.
• The share count, probably. Reuters gave no share count. Our arithmetic: $64.4 billion at $78 a share is about 826 million shares, against about 867 million in the retracted copy. That holds only if the maximum raise is priced at the top of the band.

Two cautions. This is a draft seen by one news agency, not a public filing. Reuters also says “Deal details are expected to be announced soon”, so the numbers can still move. Anthropic and the cornerstone investors “did not respond immediately to requests for comment”.

Filed at 11:29 UTC. About an hour after the Reuters report, Anthropic filed Amendment No. 2 to its S-1 with the same band: $70.00 to $78.00 a share, on 825,000,000 shares. That share count is close to our arithmetic above. The terms are in our read of the filing.

§ 18What we are watching for#

• The pricing. The range is filed: $70.00 to $78.00 a share. The final price is set after the roadshow.
• The first trading day. The filing leaves the date blank. Bloomberg reported on November 10, from deal terms it reviewed, that the IPO is set to price on November 18 and trade on November 19.
• The October run-rate, now filed. About $81 billion as of October 31, up $10 billion from September 30. Investors told Reuters this was the figure they were waiting for.
• The Broadcom financing terms, stated in a filing: the amount, the chips and the convertible features.
• A first rating from Moody’s, S&P or Fitch, against Blackstone’s double-B expectation.

§ 19Where CellCog sits#

Our conflict, declared: we build CellCog, and our agents run on Anthropic’s Claude models (Claude Opus 5.5 on most tiers; Claude Fable 5.2 on Agent Max and Creative Max since November 11, 2026), so Anthropic’s health matters to us. That is a reason to be exact here, not to cheer.

§ 20Sources#

• Anthropic, PBC, Amendment No. 2 to Form S-1, filed November 10, 2026 (accepted 11:29 UTC)
• Reuters, Anthropic IPO to raise as much as $64.4 billion, latest draft prospectus shows, Echo Wang, November 10, 2026
• Reuters via The Star, Exclusive: Anthropic sends out, then retracts details of IPO filing, emails show, Echo Wang, November 9, 2026. Read in syndication; it replaced the earlier report, “Anthropic aims to raise up to $69.3 billion in blockbuster IPO”, at the same address.
• Odaily, Anthropic sets IPO price range at $70-80 per share, aiming to raise up to $69.3 billion, November 10, 2026, 01:08 UTC. Cites market sources; not confirmed in a filing.
• Financial Times, Anthropic to press ahead with IPO targeting $1.5tn valuation, George Hammond, George Steer, Amelia Pollard and Ivan Levingston, November 6, 2026, 21:00 UTC.
• Bloomberg via Yahoo Finance, Anthropic IPO valuation expectations pressured after AI rout, Bailey Lipschultz, Julien Ponthus and Levin Stamm, November 6, 2026. Read directly.
• CNBC, Investors brace for lower Anthropic valuation, calling $1.5 trillion a ‘stretch’, Kate Rooney, November 6, 2026. Read directly.
• The Information, Anthropic to Proceed With IPO Roadshow Next Week, November 6, 2026 (headline only).
• Bloomberg, Eric Schmidt’s 1% Anthropic Stake Set to Pay Huge Windfall, Natasha Mascarenhas and Tom Maloney, October 19, 2026; read via The Straits Times syndication.

• Reuters, OpenAI seeks to accelerate fundraising ahead of Anthropic IPO, sources say, October 19, 2026. Read directly.

• Reuters, Investors temper Anthropic IPO valuation expectations over revenue growth slowdown, sources say, October 15, 2026, Milana Vinn and Anirban Sen.

• Reuters via Yahoo Finance, Exclusive: Anthropic’s IPO prospectus shows sweeping AI vision, surging costs, September 28, 2026, 23:23 UTC; republished by CNBC.
• Reuters, Anthropic logged net loss of over $80 billion in first half of 2026, WSJ reports, Jaspreet Singh, October 20, 2026. Read directly.
• The Wall Street Journal, Anthropic Draft IPO Filing Shows Red-Hot Growth, Many Risks and Massive Computing Costs, Anissa Gardizy, October 20, 2026, 3:30 pm ET (paywalled; summary read).
• Anthropic, Anthropic confidentially submits draft S-1 to the SEC, June 1, 2026.
• SEC EDGAR full-text and company search, read September 29, 2026, 01:00 UTC.
• Shay Boloor on X, September 28, 23:30 UTC.