Anthropic IPO: Date, Valuation and How to Buy Anthropic Stock

The Anthropic IPO now has a public filing and a ticker, but still no date. Anthropic, the company behind Claude, publicly filed its S-1 registration statement with the US Securities and Exchange Commission on October 26, 2026. It plans to list its Class A shares on the Nasdaq Global Select Market under the symbol ANT. The filing leaves the share price, the number of shares and the date blank, so those still come from reporting. Bloomberg said on October 1 that Anthropic could start marketing the offering the week of November 9 and list as soon as mid-November, at a valuation that investors put near $2 trillion.

That would make it the largest IPO ever, ahead of SpaceX in June. This guide separates what Anthropic has confirmed from what is only reported and lays out the timeline as it has moved since June. It reads the audited figures in the S-1 correctly, including an $80.7 billion first-half loss that is mostly an accounting charge and the first quarter in which Anthropic made an operating profit. It also explains who will control Anthropic after it lists and what you can and cannot do if you want to buy the stock.

The Key Takeaways

• Filed, but no date: Anthropic made its S-1 public on October 26, 2026, after a confidential draft in June. The ticker will be ANT on the Nasdaq Global Select Market. The price range and the share count are still blank.
• Reported timing: SEC staff procedures put the roadshow at least 15 days after the public filing, so no earlier than about November 10. Bloomberg reports marketing could start the week of November 9, with a listing as soon as mid-November.
• Valuation: the last confirmed figure is $965 billion (Series H, May 2026). The Wall Street Journal reports a raise of up to $100 billion at about $2 trillion.
• The $80.7 billion loss: the S-1 shows a first-half 2026 net loss of $80.7 billion on revenue of $16.3 billion, but $72.4 billion of it is a non-cash change in the value of convertible notes. In the second quarter Anthropic made its first operating profit, $974 million.
• You cannot buy it yet: there are no ANT shares until the IPO prices. Anthropic says any share transfer without board approval is void, and SPVs are banned.

When Is the Anthropic IPO?

Anthropic has not announced an IPO date. The latest reporting comes from Bloomberg on October 1, 2026. It says Anthropic could begin marketing its shares the week of November 9 and start trading before Thanksgiving on November 26. Bloomberg also reported that Anthropic would host prospective investors at its San Francisco headquarters on October 14. Anthropic has not confirmed any of those dates.

The first fact Anthropic put its name to was a confidential filing. On June 1, 2026, it announced that it had confidentially submitted a draft registration statement on Form S-1 to the SEC. Anthropic said this "gives us the option to go public after the SEC completes its review." It added that "the number of shares to be offered and the price have not yet been set." The company posted the same news on its official X account.

Anthropic has confidentially submitted a draft S-1 registration statement to the Securities and Exchange Commission.

Pending completion of SEC review, this gives us the option to pursue an initial public offering.

Read more: https://www.anthropic.com/news/confidential-draft-s1-sec

— Anthropic (@AnthropicAI) June 1, 2026

A confidential draft is not published. The SEC reviews it privately, and the company files a public version later, before it markets the shares. Anthropic did that on October 26, 2026 and announced the public S-1 the same day. The filing on EDGAR names the exchange and the ticker and lists 22 underwriters, led by Goldman Sachs and Morgan Stanley. It leaves the price range and the number of shares blank; Anthropic says both "have not yet been determined." Those numbers usually arrive in an amended filing shortly before the roadshow. Until then, every date for the Anthropic IPO is still a report, not a schedule.

Anthropic IPO: Confirmed vs Reported

Since October 26, the core facts about the Anthropic IPO come from Anthropic's public S-1: the exchange, the ticker, the banks and the audited figures. The date, the price, the valuation and the size of the raise are still reporting from outlets such as Reuters, Bloomberg and The Wall Street Journal, based on people familiar with the plans. The table sorts each claim by where it comes from.

Anthropic IPO Timeline: How the Date Has Moved

The reported Anthropic IPO date keeps slipping, from “as soon as October” in July to mid-November now. Each step below is dated to the report that made it, because the target has moved every few weeks.

The Dated Timeline

Why the September Plan Slipped

The September plan slipped because Anthropic moved the IPO to November, partly so it could show third-quarter results, according to The Wall Street Journal. In early September the listing was expected days before the midterm elections, with the public prospectus due in late September. The prospectus arrived on October 26 instead. Its audited statements run to June 30, 2026, so the third-quarter results are not in it yet.

Anthropic is now expected to begin marketing its IPO in mid-October at the earliest, with the listing targeted for days before the U.S. midterm elections in November, per Reuters.

Its public prospectus, previously expected as soon as next week, is now likely to come in late September.

Anthropic is also working to finalize a $15B revolving credit facility ahead of the offering. Morgan Stanley, Goldman Sachs, JPMorgan and Citi are among the banks working on the IPO.

Investors have discussed a potential valuation of around $2T.

— Wall St Engine (@wallstengine) September 4, 2026

The market around the deal has also turned. CNN reported on October 5 that rising interest rates and the Iran war energy shock have made IPOs harder, and that the wearables maker Oura has delayed its own listing. CFRA analyst Angelo Zino told CNN he still expects "a very strong appetite and demand for Anthropic."

Anthropic IPO Valuation: From $965 Billion to $2 Trillion

Anthropic's last confirmed valuation is $965 billion, and the IPO is reported to target about $2 trillion. The $965 billion figure comes from the $65 billion Series H that Anthropic announced on May 28, 2026, led by Altimeter Capital, Dragoneer, Greenoaks and Sequoia Capital. Three months earlier, the Series G had valued the company at $380 billion. The $2 trillion figure has never come from Anthropic. Reuters attributes it to investors, and the WSJ reports it alongside a raise of up to $100 billion.

What $2 Trillion Means Against Revenue

A $2 trillion price tag only makes sense against Anthropic's growth. Anthropic said its run-rate revenue crossed $47 billion in May 2026, up from $14 billion at the Series G in February. Bloomberg reported in August that the run rate passed $65 billion at the end of July, and The New York Times reported in September that Anthropic is expected to top $100 billion in annualized revenue this year. Anthropic has not confirmed either figure, and the S-1 leaves its own run-rate figure for October 31 blank for now. Run-rate revenue is one strong month multiplied by 12, not audited annual sales. The audited number in the S-1 is $11.6 billion of revenue in the second quarter of 2026 alone.

On those numbers, the Series H price was about 20 times the May run rate. A $2 trillion IPO would be about 31 times the reported July run rate. Both multiples price in years more of very fast growth, which is the bet any IPO buyer would be making.

How Anthropic Compares With SpaceX and OpenAI

Anthropic would be the second trillion-dollar listing of 2026. Elon Musk's SpaceX went public in June at a $1.77 trillion valuation and raised about $86 billion, the largest IPO in history. The previous record was Saudi Aramco's roughly $29 billion in 2019. A $100 billion Anthropic raise would beat SpaceX by about 16%.

OpenAI, Anthropic's closest rival, will not list this year. Sam Altman told Fortune in September that "right now would be an ill-advised moment to go public," citing AI safety, and answered "not 2026" on timing. How the two labs compare on models, revenue and strategy is covered in Anthropic vs OpenAI.

What the Anthropic S-1 Shows

Anthropic's public S-1 shows fast growth, a first operating profit, a very large paper loss and computing commitments that run to 2045. Its audited statements cover 2023 to 2025 and the first half of 2026. Every 2025 figure below matches what Reuters reported from a leaked draft in late September, so those numbers are no longer only Reuters' reading. All figures in this section come from the S-1 unless another source is named.

Revenue, Profit and the $80.7 Billion Loss

Anthropic's revenue grew 12-fold to $4.59 billion in 2025 and reached $16.29 billion in the first half of 2026 alone. The headline net loss for that half-year was $80.75 billion, and it needs context. $72.39 billion of it was a change in the fair value of convertible notes, derivative liabilities and SAFEs. Anthropic says the change was "primarily driven by an increase in the fair value of our outstanding convertible promissory notes resulting from an increase in our enterprise valuation." Put simply, the more Anthropic is worth, the bigger this paper loss gets. It was not cash spent running the business, and the same item made up $34.31 billion of the $41.97 billion net loss in 2025.

The operating loss, which leaves that item out, was $8.06 billion in 2025, up from $2.98 billion in 2024, and only $693 million in the first half of 2026. Compute and infrastructure cost $7.33 billion in 2025, more than the year's revenue, and $8.95 billion in the first half of 2026, a little over half of it. The turn came in the second quarter: revenue of $11.56 billion and operating income of $974 million, Anthropic's first profitable quarter at the operating level.

On its own adjusted measure, which leaves out stock-based compensation and one-off items such as the $1.5 billion settlement of the Bartz authors' lawsuit in 2025, Anthropic made $2.24 billion of adjusted operating income in the second quarter. The Financial Times reported on September 13 that Anthropic told shareholders it would post an adjusted operating profit in the third quarter too, its second in a row. The S-1 does not cover that quarter yet.

$518 Billion in Compute Commitments

Reuters reported that the leaked draft put Anthropic's infrastructure spending at no less than $518 billion over roughly a decade, about 80% of it impossible to cancel or payable whatever Anthropic uses. The largest commitments it named were $111.1 billion with Google, $110 billion with Amazon and $31.4 billion with Microsoft, plus about $161.2 billion in equipment leases linked to Broadcom. The public S-1 confirms the shape but not yet the total: it describes commitments "substantially all of which is related to compute and infrastructure," running as far as 2045, and leaves the dollar amounts blank for now. Even a $100 billion IPO would cover only a fraction of that bill, which is the plainest answer to why Anthropic is going public.

The Risk Factors

The public S-1 gives risk factors about 94 pages, from page 26 to page 119. Some are standard. Anthropic says its top five customers brought in about 25% of revenue in the first nine months of 2026, with no single customer above 10%, and that many top customers have no long-term contracts. Others are not standard. Anthropic warns that advanced AI could pose "catastrophic or existential risks to humanity" and that models, including its own, "have exhibited" self-preserving behaviors, "including attempts to resist shutdown." It also discloses a class action filed in September 2026 against Anthropic and other frontier AI developers on behalf of people who paid for consumer subscriptions. It alleges that the companies agreed to slow the pace of AI development, in breach of US antitrust law. Anthropic says it disagrees with the claims. Anthropic's CEO asked the whole industry to slow down in September. That call is covered in Pace the Frontier: What AI Labs Actually Committed To.

Who Owns Anthropic and Who Will Control It

Anthropic is owned by its founders, employees and investors, and its seven co-founders will hold 50.1% of the votes on most matters after the IPO. Amazon and Google will each own more than 5% of the company, the S-1 says, in non-voting Class N shares, and the 2026 rounds added funds such as GIC, Coatue, Altimeter, Dragoneer, Greenoaks and Sequoia.

Control is a separate question from ownership, and the S-1 confirms what Reuters reported from the draft. The co-founders will hold a single Class F share through a new Founder LLC, and that one share carries 50.1% of the votes on matters put to stockholders, including the election of directors other than those the trust picks. The group includes CEO Dario Amodei and his sister Daniela Amodei, Anthropic's president and board chair. The special share starts to phase out once fewer than three founders remain. Public buyers get Class A shares with one vote each, and employees other than the co-founders get a separate Class E stock with limited votes and no economic rights. The filing itself warns that the board's duty to balance its mission against shareholder returns may conflict with their financial interests.

Anthropic will also stay a public benefit corporation, which lets its board weigh its mission alongside returns. Its Long-Term Benefit Trust, a body of financially disinterested trustees that Anthropic created in 2023, holds Class T shares that let it elect and remove the Class T directors, who will make up a majority of the board. Anyone buying Anthropic stock is buying into a company that the founders and the trust, not the market, will steer.

On October 18, 2026, Anthropic added a new holder to that picture: the Anthropic Public Benefit Fund, a wholly owned LLC. The S-1 says Anthropic has contributed 846,840,960 non-voting shares to it, 5% of its fully diluted shares as of June 30, 2026. Under the framework Anthropic announced, the board can add 2% more for every 50% rise in the company's value above a baseline it has not yet published. Anthropic says none of that equity will be used for lobbying or political giving. Counting the co-founders' pledge to donate 80% of their equity and an employee donation match that about half of staff use, Anthropic puts the share of the company dedicated to the public good at roughly 20%. It says it will publish the Fund's governance and the valuation milestones in the coming months.

How to Buy Anthropic Stock

You cannot buy Anthropic stock today, and Anthropic says most pre-IPO offers are worthless. The ticker will be ANT, but no shares trade until the IPO prices, and the company blocks private share sales it has not approved. Once the IPO prices, you will be able to buy through an ordinary brokerage like any listed stock. This section explains the rules; it is not investment advice.

Why Pre-IPO Anthropic Shares Are a Trap

Pre-IPO Anthropic shares are a trap because Anthropic voids any transfer its board has not approved. The restriction sits in its bylaws. Its investor alert on unauthorized stock sales, last updated June 29, 2026, says any sale or transfer without board approval "is void and will not be recognized on our books and records." It bans special purpose vehicles (SPVs) outright. It also warns that anyone selling Anthropic shares to the public through forward contracts, tokenized securities or similar mechanisms is "likely offering an investment that may have no value."

The alert also says Anthropic does not issue stock certificates to the general public, so anyone handing you one is very likely running a fraud. In May 2026 the page named eight platforms, including Hiive and Forge Global, as TechCrunch reported at the time. The current page names only Unicorns Exchange and says that removing a firm "does not mean Anthropic recognizes or approves" its investment vehicles.

What You Can Do Before and on IPO Day

Before the listing, the only clean exposure is indirect. Amazon and Alphabet are public companies with large stakes in Anthropic, though Anthropic is only one part of what each company is worth. Now that the public S-1 is filed, these are the steps to buy at the offering price:

1. Read the public S-1 on EDGAR, and watch for the amended filing that adds the price range and the share count. The ticker is ANT.
2. Check whether your broker has an allocation. Banks hand some IPO shares to retail brokers; the list for Anthropic has not been announced.
3. Place an indication of interest with a share count and a maximum price. It is a request, not a guaranteed purchase.
4. Keep the cash in the account. Allocations usually arrive the night before or the morning of the listing.
5. Or wait for trading. If you get no allocation, you can buy on the open market once the stock trades, often at a very different price.

Maybe what you want is Claude itself, not a piece of the company behind it. Then you do not need to wait for November. Fello AI puts Claude next to ChatGPT, Gemini and Grok in one Mac, iPhone and iPad app. Claude Pricing lists Anthropic's own plans.

What to Watch Before the Anthropic IPO

The public S-1 is on EDGAR, so the next real milestone for the Anthropic IPO is the price range. Four signals, in rough order, will tell you whether mid-November holds.

1. The price range and share count, which usually arrive in an amended S-1 shortly before the roadshow.
2. The roadshow. SEC staff procedures require the public filing at least 15 days before it, so with the S-1 filed on October 26, marketing cannot start before about November 10, in line with Bloomberg's week of November 9.
3. Third-quarter results, which the WSJ says the November timing was chosen to include and which are not in the S-1 yet.
4. Market conditions: rising rates have already pushed other companies to delay their listings.

For the CEO taking Anthropic public, including what his stake is worth, see Who Is Dario Amodei?.

The Verdict on the Anthropic IPO

The Anthropic IPO is real and now public, but its date is not set. Anthropic has filed its S-1, named its exchange and ticker, lined up 22 underwriters, and is reported to be weeks from marketing the shares. Mid-November is a reasonable expectation and a poor thing to plan money around until the price range is in the filing.

The useful work for a would-be buyer now is reading the numbers correctly. This is a business whose revenue grew 12-fold in 2025 and passed $11.5 billion in a single quarter in 2026, the same quarter it first made an operating profit. Its headline loss is mostly a paper charge tied to its own rising value, its compute bills cannot be cancelled, and its founders keep control either way.

Until the shares list, ignore anyone offering to sell you some.

FAQ