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Anthropic IPO: what the filing shows and what the midterms change

Anthropic has filed to list on Nasdaq as ANT, but no price, size or date is set as of 5 November 2026. What the S-1 shows, the risks it names, and what the midterms change.

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Anthropic's IPO is filed but not priced. As of 5 November 2026, the AI company has a public S-1 with the SEC, filed 26 October and amended 2 November, to list Class A shares on Nasdaq as "ANT". The price, share count and date are blank. Democrats are projected to win both chambers of Congress, which could bring more oversight of AI from January, but the SEC, not Congress, decides when the filing takes effect.

In short

  • The filing shows $33.2 billion of revenue in nine months of 2026, a third-quarter operating loss, and about $895.4 billion of computing commitments.
  • Price, size and date are not filed; reports point to a roadshow from the week of 9 November and a debut the week before Thanksgiving, as reported value estimates fall.
  • A Democratic Congress can investigate, but new AI law needs the president's signature or a two-thirds override, and the Pentagon dispute sits with the courts.

Not advice

This note explains; it isn't financial or investment advice.

What has Anthropic filed, and what is still blank?

An S-1 is the registration statement a company files with the Securities and Exchange Commission before selling shares to the public: its business, accounts and risks. Anthropic's amendment, the S-1/A of 2 November, added the third quarter. It intends to list on the Nasdaq Global Select Market and said the shares and price range "have not yet been determined" (Anthropic).

The S-1/A names 22 underwriters, the banks that buy and resell the shares, led by Goldman Sachs and Morgan Stanley. Class A buyers will not control the company: one Class F share, held through an LLC by the seven co-founders, carries 50.1% of the votes, and a Long-Term Benefit Trust elects a majority of the board.

What does the S-1 show about the business?

Revenue grew very fast, an operating profit lasted one quarter, and the commitments dwarf the revenue. Every figure is from the S-1/A of 2 November.

Measure Period Figure
Revenue 2025 $4.6 billion
Revenue 9 months to 30 Sep 2026 $33.2 billion
Revenue Quarter to 30 Sep 2026 $17.0 billion
Operating result Quarter to 30 Jun 2026 $974 million profit
Operating result Quarter to 30 Sep 2026 $567 million loss
Net loss 9 months to 30 Sep 2026 $104.0 billion
Compute and lease commitments As of and after 30 Sep 2026 about $895.4 billion
Top five customers' share of revenue 9 months to 30 Sep 2026 about 25%, none over 10%
Cash and short-term investments 30 Sep 2026 $131.8 billion

Growth slowed: third-quarter revenue rose 47% on the second quarter, against 144% before, per CNBC. Quarterly compute costs rose from $5.6 billion to $9.9 billion; the filing says short-term compute "currently costs significantly more" than its multi-year contracts and will "compress our operating margin".

Most of the $104.0 billion net loss is an accounting charge, not cash spent: $94.3 billion of it is the rising fair value of convertible notes and similar securities as the valuation climbed. Operating cash flow over the nine months was $6.6 billion positive.

The commitments are the number to weigh, and the core of the AI bubble debate. About $447.5 billion falls due before the end of 2030 and $69.8 billion within 12 months of 30 September, substantially all for computing and data centers. About $213.8 billion of it can be ended or depends on conditions, the filing says. Amazon, Google and Microsoft, which also hold equity, provide "substantial portions" of its compute.

How has Anthropic's value grown?

Its private valuation rose about 16 times in 15 months. Rounds and "run-rate" revenue, an annualized rate rather than reported revenue, are from Anthropic's announcements, such as Series H.

Date Round Post-money valuation Run-rate revenue, company's words
3 Mar 2025 Series E, $3.5B $61.5B about $1B at the start of 2025
2 Sep 2025 Series F, $13B $183B over $5B by August 2025
12 Feb 2026 Series G, $30B $380B $14B
28 May 2026 Series H, $65B $965B crossed $47B in May 2026
5 Nov 2026 IPO talk, reported $1.4–1.5 trillion not filed

The last row is not a price. Bloomberg reported on 5 November that investors' fair-value estimate "has shifted to around $1.4 trillion to $1.5 trillion". On 3 November Fortune, citing The Wall Street Journal, put it at $1.5 trillion to $1.6 trillion, "down from earlier talk of nearly $2 trillion."

What happens between now and the first trade?

Four steps remain, none with a filed date. A roadshow is the company and its banks pitching the shares to fund managers. Pricing, usually the evening before trading, sets the offer price from the orders. A lock-up is a period after listing during which insiders agree not to sell.

Step What it depends on Status, 5 Nov 2026
Price range in a new amendment Company and banks agreeing a range Not filed
Roadshow The range on file Reported for the week of 9 Nov (Bloomberg)
SEC declares the filing effective Review finished; government funded to 11 Dec Pending
Pricing, then first trade as ANT Orders at an acceptable price Reported for the week before Thanksgiving (Fortune)

Locked-up shares are released in stages: some on the first trading day, more on days 27 to 76, more after the 2026 annual results. Joining the S&P 500 requires GAAP profit in the latest quarter and the last four combined, per CNBC; the $23.3 billion third-quarter net loss rules that out.

What risks does the filing itself name?

The risk factors fill pages 27 to 120. A few, in its words:

  • Losses: the company "may not generate sufficient revenue to achieve or sustain profitability in the future."
  • Debt: it has "incurred significant indebtedness" to fund "our substantial compute commitments".
  • Government: the Department of War moved to designate it a "supply-chain risk to national security".
  • Rules: AI regulation is "developing rapidly and in a fragmented manner, including as a result of political considerations".
  • Control: the trust "may have interests that differ from yours".

What do the midterms change for Anthropic?

Oversight and the odds of a federal AI law, not the listing itself. As of about 11:40 AM ET on 5 November, NBC News projects Democratic control of the Senate, 54 seats to 44 with Mississippi and Alaska uncalled, and of the House, with 243 seats called against the 218 needed. Projections, not certified results. The new Congress convenes on 3 January 2027.

In Fortune on 3 November, before the results, Jeremy Kahn wrote that Democrats are "far more likely to try to enact some kind of federal AI regulation", that any bill "faces a likely veto from President Trump", and said "a new wave of investigations" of AI companies may follow. An override takes two-thirds of those voting in each chamber, 67 senators and 290 members if all vote; hearings, which are how Congress oversees, need no signature. The top Democrats on three House committees had already asked Anthropic and four others on 28 October for "a full accounting" of safety incidents by 11 November.

On preemption, whether a national AI law should override state laws, Anthropic has said "a uniform federal approach is preferable" but opposed a 10-year state-law ban without a federal standard, and it backed California's SB 53.

Anthropic gave $40 million in 2026 to Public First Action, which it says cannot be used for candidates. Of the candidates Public First's affiliated super PACs backed, per Fortune on 4 November, Brian Poindexter (OH-7), Bob Brooks (PA-7) and Pete Ricketts (Nebraska Senate) won; Scott Singer (FL-25), Carlos De La Cruz (TX-35) and Rhett Marques (AL-2) lost.

The election does not decide the dispute with the government. A federal court in California ruled on 27 August 2026 that the actions were "retaliatory", and the government has appealed, per CNBC. On 25 September the D.C. Circuit, 2-1, upheld the supply-chain designation; Anthropic seeks a rehearing by the full court. The SEC declares the S-1 effective; a Democratic Senate confirms future SEC commissioners, but only from January.

How is the market's mood affecting the offering?

Toward caution, for now. On 4 November the S&P 500 closed up 1.58% while the PHLX Semiconductor index fell 3.13% (Yahoo Finance). On 5 November, at 11:40 AM ET, CNBC had the Nasdaq Composite down 3.9%, and Reuters at 11:05 AM had the Nasdaq 100 set to lose about $1.8 trillion, on fears the result "could stall the pace of AI infrastructure expansion". Bloomberg wrote that the election "could give some investors a reason to talk down valuation expectations." The storage and AI stocks and data-center notes have more.

How can someone buy Anthropic shares?

Not yet. Once ANT lists, its shares trade through any brokerage on the stock market; before that, only investors a bank or broker allocates IPO shares to can buy at the offer price. FINRA warned on 18 August 2026 that some offers of early access to "a popular private company" are "outright scams designed to steal your money". A token sold online as a stake in Anthropic is not Anthropic stock.

Still argued

Is $1.4 trillion or more justified? By Jay Ritter's figures (Fortune, 3 November), above about $1.41 trillion buyers pay over $40 per dollar of trailing revenue, a level only 14 of 4,110 IPOs from 1980 to 2024 reached, and those trailed the market by 15.4% on average over up to three years; he still sees "substantial upside potential". Aswath Damodaran (NYU Stern) valued the equity at about $1.475 trillion on 28 October, assuming $1 trillion of revenue by 2036. The filing shows the growth and the losses; it cannot show 2036.

About this note

Disclosure: Graphite uses Anthropic's Claude models in its AI features, alongside other providers'. Graphite has no stake in Anthropic's offering.

Check yourself

  • Why is most of Anthropic's $104.0 billion net loss not cash it spent?
  • Which steps remain before ANT trades, and which does the SEC control?
  • What can a Democratic Congress do about AI without the president, and what can't it?

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