Anthropic IPO: S-1 Filing, Date, Valuation & How to Buy (Updated Oct 27, 2026)
Anthropic filed its S-1 on Oct 26, 2026 to list on Nasdaq as ANT. $16.3B H1 revenue, IPO date, price range, ~$1.5T valuation talk and how to buy.
Quick answers
- Has Anthropic filed for an IPO?
- Yes. Anthropic, PBC publicly filed its Form S-1 with the SEC on October 26, 2026, after a confidential draft submission in June. The registration is not yet effective, so shares cannot be sold yet.
- What is the Anthropic stock ticker?
- ANT. Anthropic plans to list its Class A common stock on the Nasdaq Global Select Market under the symbol "ANT".
- When is the Anthropic IPO date?
- No date is set. The S-1 leaves the price range and share count blank. Reports point to pricing in November 2026, after the Nov 3 midterms and before Thanksgiving.
- What is the $16.3B in the Anthropic S-1?
- Revenue. Anthropic booked $16.29 billion of revenue in the six months ended June 30, 2026, up from $1.16 billion a year earlier. Net loss in the same period was $80.7 billion, mostly non-cash fair-value charges.
- What will the Anthropic IPO valuation be?
- Not in the filing. The last private round valued Anthropic at $965 billion in May 2026; Reuters reports investors now discussing about $1.5 trillion, down from about $2 trillion.
Status, Oct 27, 2026: the Anthropic IPO is officially in motion. Anthropic filed its public S-1 on October 26 and announced it on anthropic.com. The stock will trade on Nasdaq as ANT. The price range, number of shares and IPO date are still blank. We update this page each time Anthropic files an amendment.
1. Anthropic IPO scorecard: confirmed vs. reported
Item | Figure | Status |
|---|---|---|
Public S-1 filed | Oct 26, 2026 | Confirmed (SEC EDGAR) |
Confidential draft | June 2026 | Confirmed (Reuters, CNBC) |
Exchange and ticker | Nasdaq Global Select, ANT | Confirmed (S-1, anthropic.com) |
Lead underwriters | Goldman Sachs, Morgan Stanley | Confirmed (S-1); 22-bank syndicate |
H1 2026 revenue | $16.29B (vs. $1.16B H1 2025) | Confirmed (S-1) |
Q2 2026 revenue | $11.56B, +1,368% YoY | Confirmed (S-1) |
H1 2026 net loss | $80.7B ($72.4B non-cash fair-value) | Confirmed (S-1) |
Q2 2026 operating income | $974M | Confirmed (S-1) |
Price range, shares, raise | Blank | Coming in an S-1/A |
IPO valuation | ~$1.5T (was ~$2T talk) | Reported (Reuters) |
Raise size | Up to $100B | Reported |
IPO date | Mid to late November 2026 | Reported |
Key points:
- The S-1 is the public prospectus. It is filed, not effective. No one can buy ANT shares until the SEC declares it effective and the deal prices.
- The headline number, $16.3B, is first-half 2026 revenue. It is more than Anthropic earned in all of 2023 to 2025 combined (about $5.0B).
- The $80.7B net loss looks huge, but about $72.4B is a non-cash change in the fair value of convertible notes, derivatives and SAFEs. Anthropic posted its first operating profit, $974M, in Q2 2026.
- Valuation is not in the filing. Every number you see is from press reports.
2. Anthropic S-1 filing: what's inside
The Anthropic S-1 filing runs about 318 pages. The parts most readers care about:
- Growth. Revenue grew 1,368% year over year in the three months to June 30, 2026, while compute and infrastructure costs grew 300%.
- Customers. Customers spending $100,000+ a year grew from more than 950 to more than 11,900 between Sep 30, 2025 and Sep 30, 2026. Net revenue retention was about 900%. About one-fifth of revenue came from two customers.
- Compute. Named compute contracts with Google, Amazon, Microsoft, SpaceXAI, Broadcom, Nscale and Lambda add up to roughly $637B. Reuters puts planned cloud spending above $450B.
- Cash. $131.7B of cash and short-term investments at June 30, 2026.
- Control. Seven co-founders keep 50.1% of the vote through a single Class F share held by a Founder LLC. The Long-Term Benefit Trust elects a majority of the board. Anthropic stays a Public Benefit Corporation.
- Risks. The prospectus warns its models could show "self-preserving behaviors", such as trying to "resist shutdown".
- Blanks. Price per share, underwriting discount, share count and an October run-rate revenue line (page 194 to 195) are empty. They get filled in an amended S-1.
3. Anthropic IPO timeline
Date | Event |
|---|---|
May 2026 | Private round: $65B raised at a $965B post-money valuation |
June 2026 | Confidential draft S-1 submitted to the SEC |
Oct 15, 2026 | Reuters: some investors discuss ~$1.5T instead of ~$2T |
Oct 26, 2026 | Public S-1 filed; Nasdaq ticker ANT |
Next | S-1/A with price range and share count, then the roadshow |
Nov 2026 (reported) | Pricing night, then first trade on Nasdaq the next morning |
A US IPO usually prices about 15 days or more after the public S-1, because the roadshow can only start once the file has been public that long. Press reports point to a window after the November 3 midterms and before Thanksgiving on November 26.
4. Anthropic IPO price and valuation
The Anthropic IPO price is not set. The S-1 cover page shows "$" with no number. Here is what sets the range:
- Private floor: $965B from the May 2026 round. Pricing below it would be a down round.
- Investor talk: about $1.5T, per Reuters, down from about $2T a week earlier after an investor event. Other reports cite $1.5T to $1.75T.
- Reference deal: SpaceX priced a $75B IPO at a $1.75T valuation in June 2026.
- Revenue multiple: the Financial Times reported Q3 2026 revenue of $16.8B. Annualized, that is about $67B, so $1.5T is about 22x run-rate.
The price range per share appears in the first S-1/A. Expect it about one to two weeks before pricing.
5. How to buy Anthropic stock
You cannot buy Anthropic stock on a public exchange today. Here is how it works:
- Before the IPO: shares trade only privately (secondary platforms, pre-IPO funds) for accredited investors. Quotes like "ANTH.PVT" are private-market estimates, not ANT stock.
- IPO allocation: some brokers (for example Robinhood, SoFi, Fidelity and Schwab) offer IPO access to eligible clients. Request shares once the price range is set; allocation is not guaranteed.
- First trade: once ANT opens on Nasdaq, any brokerage account can buy it with a market or limit order. Use a limit order; first-day prices swing.
- Indirect exposure: Amazon and Google are large Anthropic investors, so their stock carries some Anthropic exposure.
Watch out for fake "Anthropic pre-IPO" token offers. The only real ticker is ANT on Nasdaq, and only after the deal prices.
6. Anthropic vs. OpenAI IPO
Anthropic is set to list first. OpenAI filed confidentially in June 2026 and is expected to list by early 2027; Sam Altman said in September that OpenAI would not go public this year.
7. Use Claude with your team while Wall Street prices it
Yes, you can put Claude to work today. Sumus is a group chat where AI employees run on the latest Claude models next to your team: they read the thread, do the task, and hand back files. If you are tracking the IPO, have an AI employee watch EDGAR for the S-1/A and summarize each change for the group.
8. What we're watching
- S-1/A with price range and share count
- Roadshow start and the official pricing date
- Filled-in October run-rate revenue (page 194 to 195)
- Nasdaq first-trade date for ANT
- Any change to the reported ~$1.5T valuation
FAQ
When is Anthropic going public?
Anthropic has filed its public S-1 (Oct 26, 2026) but has not set a date. Reports expect pricing in November 2026, with ANT opening on Nasdaq the next trading day.
Can I buy Anthropic stock now?
Not on a public exchange. Before the IPO, only private secondary trades exist for accredited investors. After pricing, ANT can be bought through any brokerage.
What is the Anthropic IPO price?
Not set. The S-1 leaves the price per share blank. The range appears in an amended S-1/A, usually one to two weeks before pricing.
How much revenue does Anthropic make?
$16.29B in the first half of 2026 per the S-1, including $11.56B in Q2. Full-year 2025 revenue was $4.6B.
Is Anthropic profitable?
On operations, briefly: Q2 2026 operating income was $974M. Net loss for H1 2026 was $80.7B, mostly non-cash fair-value charges.
Who are the underwriters?
Goldman Sachs and Morgan Stanley lead a 22-bank syndicate.
What does the ANT ticker stand for?
ANT is the Nasdaq symbol Anthropic chose for its Class A common stock.
Sources
- Anthropic S-1, SEC EDGAR
- Anthropic announcement, Oct 26, 2026
- Reuters, Oct 26, 2026: Anthropic's IPO filing shows explosive growth, risks and staggering costs
- CNBC live coverage, Oct 26, 2026
Update log
- — Oct 27: First published. Public S-1 filed Oct 26; Nasdaq ANT; price range and date not set.