Anthropic IPO: S-1 Filing, Ticker ANT, Date and Valuation

Anthropic has publicly filed for an initial public offering. On October 26, 2026, Anthropic, PBC submitted a Form S-1 registration statement to the U.S. Securities and Exchange Commission and said it has applied to list its Class A common stock on the Nasdaq Global Select Market under the ticker "ANT." The filing follows a confidential draft registration the company submitted on June 1, 2026. Goldman Sachs and Morgan Stanley are named as lead underwriters. The number of shares to be sold and the price range have not been set, and Anthropic has not confirmed a listing date — though press reports point to marketing beginning around the week of November 9, 2026. Here is what's confirmed directly from the filing, and what is still analyst and press speculation.

What Anthropic has actually confirmed

The confirmed facts come from two places: Anthropic's own newsroom and the S-1 document itself, filed publicly on the SEC's EDGAR system. In its October 26 announcement, Anthropic said it "has filed a registration statement on Form S-1 with the U.S. Securities and Exchange Commission (SEC) relating to a proposed initial public offering" of its Class A common stock, and that it has applied to list on the Nasdaq Global Select Market under the symbol ANT. The S-1 filing on SEC EDGAR confirms the same details in its cover page and lists Dario Amodei, chief executive and co-founder, and Daniela Amodei, president and co-founder, as the signing executives.

What the filing does not confirm is just as important. The cover page leaves the number of shares being offered and the price range blank — standard practice for an initial S-1 before an amended version with pricing terms is filed closer to the roadshow. Anthropic also has not announced a specific date for when shares will begin trading. Anyone searching for an exact "Anthropic IPO date" or "Anthropic IPO share price" right now will not find one in the company's own disclosures, because neither has been set.

From a confidential draft to a public filing

Anthropic's path to this point started earlier in 2026. On June 1, the company announced that it had "confidentially submitted a draft registration statement on Form S-1 to the U.S. Securities and Exchange Commission." Confidential submissions are a mechanism the SEC allows for larger companies to begin the review process out of public view, disclosing financials and risk factors to regulators without making them public yet. Anthropic said at the time that the filing "gives us the option to go public after the SEC completes its review process," while stressing that the number of shares and offering price had not been decided and that the timing would depend on market conditions.

Nearly five months later, that confidential process converted into the public S-1 filed October 26 — the document that starts the public clock toward a listing. Under SEC rules, a company generally cannot begin its roadshow (the formal investor marketing period) until 15 days after its first public filing, which analysts have pointed out puts the earliest plausible start around November 10, 2026.

Ticker, exchange and underwriters

The S-1 states plainly that Anthropic "applied to list our Class A common stock on the Nasdaq Global Select Market under the symbol 'ANT.'" That answers one of the most-searched questions about this filing directly from the primary document — no inference required.

On underwriting, the filing's cover page lists Goldman Sachs & Co. LLC and Morgan Stanley first among the syndicate, which is the conventional way an S-1 signals its lead ("bookrunning") banks. The broader underwriting group named in the filing also includes J.P. Morgan, Citigroup, Barclays, Wells Fargo Securities, BofA Securities, Deutsche Bank Securities, RBC Capital Markets, UBS Investment Bank, BMO Capital Markets, BNP Paribas, Crédit Agricole, and additional banks further down the syndicate list — a large roster typical of a mega-cap tech listing. Anthropic's S-1 does not itself characterize any bank as "lead," so the Goldman Sachs/Morgan Stanley designation reflects standard market convention plus their position atop the filing's cover page.

Inside the financials: fast revenue growth, a loss that looks bigger than it is

The S-1's financial statements give the clearest, most defensible numbers in this whole story, because they come from the filing itself rather than a press paraphrase. Here is what Anthropic reported:

Two things stand out. First, revenue exploded: $16.3 billion in the first half of 2026 alone, up roughly 1,300% from the $1.16 billion booked in the same period a year earlier, according to the S-1's own management discussion. Second, the headline "net loss" of about $80.7 billion for the first half of 2026 looks alarming next to that revenue figure, but the filing's own breakdown shows it is overwhelmingly a non-cash, accounting-driven number rather than a reflection of how the underlying business is running. Anthropic's actual operating loss for the first half of 2026 was $693 million — smaller than the $2.1 billion operating loss it posted in the same period of 2025, despite revenue growing more than 13-fold.

The gap between the $693 million operating loss and the $80.7 billion net loss is explained almost entirely by one line item: a $72.4 billion "change in fair value of convertible notes, derivative liabilities, and SAFEs" for the first six months of 2026, per the S-1's statements of operations. In plain terms, Anthropic has outstanding convertible notes and SAFE (simple agreement for future equity) instruments that must be revalued on the books every quarter to reflect the company's rising private valuation. As Anthropic's valuation jumped following its Series H round in May and June 2026, the accounting value of those instruments — and therefore the company's reported liability and paper loss — jumped with it. That is a feature of how fast-growing, richly-valued private companies account for convertible financing, not a sign that Anthropic is burning $80 billion in cash. Some outlets reporting on the filing, including a Reuters factbox picked up by other wire services, have made the same point: the headline loss is "mostly" an accounting artifact of the company's own valuation surge, not a cash shortfall.

That revenue growth did not happen for free, however. The S-1 also shows compute and infrastructure costs rising from $2.33 billion in H1 2025 to $8.95 billion in H1 2026, underscoring how directly Anthropic's growth is tied to GPU and data-center capacity — the same dynamic playing out across the industry, including in large infrastructure commitments like Nvidia and Meta's AI infrastructure investments and the broader efficiency push behind techniques like mixture-of-experts architectures that let model providers serve more traffic per dollar of compute.

Valuation: what's confirmed, what's reported, and what's pure speculation

This is the part of the story where confirmed fact and press speculation most need to be kept separate, because the numbers in circulation vary enormously.

Confirmed by the S-1 itself: the filing discloses that Anthropic sold Series H-1 redeemable convertible preferred stock from May to June 2026 at $589.0095 per share, but the registration statement does not state an aggregate company valuation figure in dollar terms, and it explicitly leaves the IPO's own share count and price range blank.

Reported by wire services (not company-confirmed): Reuters has reported that Anthropic's Series H round raised $65 billion at a $965 billion post-money valuation — up sharply from the $380 billion valuation reported for its Series G round in February 2026 and the $183 billion valuation of its Series F round in September 2025, a funding trajectory also summarized in Anthropic's Wikipedia entry, which cites contemporaneous reporting for each round. None of those figures is an IPO valuation; they describe prior private funding rounds.

Press speculation about the IPO itself: The Wall Street Journal has reported, citing people familiar with the matter, that Anthropic could seek to raise upward of $100 billion in the offering at a valuation in the range of roughly $1.5 trillion to $2 trillion — which, if it holds, would make it one of the largest IPOs on record. Treat that range as a reported target, not a confirmed number: Anthropic has not stated a target valuation publicly, the S-1's pricing fields are blank, and IPO valuations routinely move between an initial target and the price that is actually set the night before trading begins. Anyone searching for "Anthropic IPO valuation" today should understand that the only number in the primary filing is the historical price of the Series H-1 preferred shares — not a public-market valuation, which doesn't exist until the stock actually prices.

A public benefit corporation going public

Anthropic's corporate structure adds a wrinkle that's specific to this IPO. The company is incorporated as a Delaware public benefit corporation, which the S-1 says requires its board to balance stockholder returns against "the best interests of those materially affected by our conduct" and a specific public benefit purpose tied to AI safety. Layered on top of that, Anthropic maintains a Long-Term Benefit Trust — described in the filing as "an independent body of financially disinterested trustees with expertise in AI safety, national security, public policy, and social enterprise" — which holds a special class of stock, Class T common stock, giving it the power to elect and remove a majority of Anthropic's board. Class T stock carries no general voting rights on ordinary shareholder matters and no economic interest; its purpose, per the filing, is governance oversight rather than financial return. Combined with the founders' Class A voting power, multiple outlets reporting on the filing have described Anthropic as likely to qualify as a "controlled company" under Nasdaq's governance rules after listing, which would exempt it from certain board-independence requirements that apply to widely held public companies — a status common among recent tech IPOs with dual-class or multi-class share structures.

When could Anthropic's shares actually start trading?

No date is confirmed. What can be said with more confidence is the regulatory mechanics: SEC rules generally require at least 15 days between a company's first public S-1 filing and the start of its roadshow, which — counting from the October 26 filing — puts the earliest plausible roadshow start at November 10, 2026. Multiple outlets, citing Bloomberg, have reported that Anthropic's roadshow could begin around the week of November 9, 2026, with a listing targeted before the U.S. Thanksgiving holiday on November 26. Those reports also note that before any roadshow begins, Anthropic would need to file an amended S-1 that fills in the blank share count and price range — a step that has not happened as of this writing. Until that amendment appears on EDGAR, there is no company-confirmed date, and "the week of November 9" should be read as a press-reported estimate rather than a locked schedule.

What's next

The next concrete, verifiable milestone to watch for is an amended S-1 (an S-1/A) on SEC EDGAR that adds a share count and an estimated price range — that filing is what typically triggers the formal roadshow and gives the first real basis for an "Anthropic IPO share price" estimate. After that, expect a pricing event the evening before trading begins, followed by the actual Nasdaq debut under ticker ANT. Readers tracking this story should treat any valuation or date reported between now and that amended filing as provisional, and should check SEC EDGAR or Anthropic's own newsroom directly for confirmation rather than relying on secondary aggregation, given how much the reported figures around this filing have already varied from outlet to outlet.

Frequently asked questions

What is Anthropic's IPO ticker symbol? Anthropic has applied to trade as "ANT" on the Nasdaq Global Select Market, according to its S-1 filing. The listing is not yet active.

When did Anthropic file for its IPO? Anthropic confidentially submitted a draft S-1 on June 1, 2026, then filed its public S-1 with the SEC on October 26, 2026.

Who are the lead underwriters on Anthropic's IPO? Goldman Sachs & Co. LLC and Morgan Stanley appear first in the underwriting syndicate listed on the S-1's cover page, with J.P. Morgan, Citigroup, Barclays, and more than a dozen other banks also named.

What is Anthropic's IPO valuation? Not yet set. Anthropic's last disclosed private valuation was $965 billion after its May–June 2026 Series H round, per Reuters. Press reports, including from the Wall Street Journal, suggest the company could target a valuation around $1.5 trillion to $2 trillion for the offering itself, but that figure is unconfirmed and the S-1's price range is blank.

When is the Anthropic IPO date? No date has been confirmed by the company. Reports citing Bloomberg point to a roadshow beginning around the week of November 9, 2026, with trading potentially starting before Thanksgiving — but this is a press estimate, not a company announcement.

How much revenue and loss did Anthropic report in its S-1? $16.3 billion in revenue for the first half of 2026, against a net loss of about $80.7 billion for the same period — though the filing shows that loss is driven mostly by a non-cash $72.4 billion revaluation of convertible notes and SAFEs tied to the company's rising valuation, not operating cash burn. Anthropic's actual operating loss for the period was $693 million.

Written byTheo Park

Theo Park runs the AI desk at Pandromeda. He follows model launches from the frontier labs and the open-weight community, tracks the assistants and developer tools built on them, and explains what each release changes on pricing, capability and safety. His reporting leans on primary sources: model cards, technical reports, API documentation and the companies' own announcements.

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