Anthropic IPO: Filing, Timeline & Pre-IPO Exposure
Anthropic filed a confidential draft S-1 on 1 June 2026. Here's what the reported prospectus shows, the likely timing and how Class F control works.
Anthropic has filed for an IPO, but it has not listed and has no ticker yet. The company confidentially submitted a draft S-1 registration statement to the SEC on 1 June 2026, and reporting in late September said the listing is expected after the US midterm elections in November 2026, with a valuation target above $2 trillion. Until a public S-1 appears and the shares price, Anthropic stock can only be held privately.
This guide covers the filing itself, what Reuters reported from the draft prospectus, the realistic timeline, and what an IPO means for anyone holding pre-IPO exposure.
As of October 2026: based on Anthropic's announcements of 28 May and 1 June 2026, and Reuters reporting on the confidential draft prospectus published 29 September to 1 October 2026. The prospectus is not public, and its figures may change before any offering.
Has Anthropic filed for an IPO?
Yes, confidentially. On 1 June 2026 Anthropic, PBC announced that it had "confidentially submitted a draft registration statement on Form S-1" for a proposed IPO of its common stock. The announcement, made under SEC Rule 135, said the number of shares and price had not been set and that the offering "will depend on market conditions and other factors".
A confidential submission lets the SEC review the document before anything is published. The company must make the S-1 public at least 15 days before starting its roadshow. As of early October 2026, no public S-1 had appeared on EDGAR.
Anthropic IPO timeline so far
Date | Event |
|---|---|
March 2025 | Series E: $3.5B at $61.5B post-money |
September 2025 | Series F: $13B at $183B post-money |
February 2026 | Series G closes |
May 2026 | Run-rate revenue crosses $47B, per Anthropic |
28 May 2026 | Series H: $65B at $965B post-money |
1 June 2026 | Confidential draft S-1 submitted to the SEC |
Late Sept 2026 | Reuters reports details of the draft prospectus; listing expected after the November midterms |
Next | Public S-1, roadshow, pricing, first trade |
When is the Anthropic IPO date?
There is no confirmed date. Reporting in late September 2026 pointed to a listing after the US midterm elections on 3 November 2026. The remaining steps are well defined:
SEC comments on the draft are resolved.
The S-1 is filed publicly, at least 15 days before the roadshow.
An amended S-1 sets a price range, an exchange and a ticker.
The roadshow runs, usually one to two weeks, then the deal prices and trades.
So the earliest practical window is several weeks after the public S-1 lands. Market conditions can still push it back; Kraken's parent Payward filed confidentially in November 2025 and later delayed its plans into 2027.
What the draft prospectus reportedly shows
Reuters reviewed the confidential draft. Its reported figures:
Item | Reported figure |
|---|---|
Valuation target | More than $2 trillion, vs $965B in May 2026 |
2025 revenue | About $4.6B, up about 12x |
2025 operating loss | $8.06B (2024: $2.98B) |
2025 net loss | About $42B, of which ~$34B was an accounting charge tied to financing instruments that could convert into shares |
Cash and short-term investments | $20.28B at end-2025 |
Compute spend 2025 | $7.33B of $12.65B total operating expenses |
Future compute obligations | At least $518B over the coming decade |
Customer concentration | Two customers ~25% of 2025 revenue; Amazon and Google handled 47% of sales |
Risk factors | About 80 of 261 pages of main text |
Note the mismatch between the 2025 revenue figure (a full-year number) and the $47 billion run-rate Anthropic cited in May 2026 (an annualised current figure). Both can be true at once for a company growing this quickly, but they shouldn't be compared directly.
Founder control after listing
The draft describes a Founder LLC holding a special Class F share with 50.1% of voting power on key matters, including some director elections. Public Class A shares would carry one vote each. Anthropic would remain a Delaware public benefit corporation. We cover ownership in detail in Anthropic cap table: who owns Anthropic?
Anthropic stock ticker and exchange
Neither has been announced. The ticker and exchange will appear in an amended public S-1. Until then, any "Anthropic stock" quote is a private-market indication, a CFD from a broker referencing an expected listing, or a token, not an exchange-listed share.
What an IPO means for pre-IPO exposure
Every pre-IPO instrument handles a listing differently, and the differences matter more than the headline valuation:
Instrument | Typical treatment at IPO | What to check |
|---|---|---|
Directly held private shares | Convert to listed common; usually subject to a lock-up | Lock-up length, share class conversion |
SPV or fund units | Fund decides whether to distribute shares or sell; fees and carry apply | Fund documents, distribution policy |
Broker CFDs on expected listing | Contract terms define how the position converts or closes | Broker terms and margin rules |
Tokenized price exposure | Follows the issuer's published product mechanics | Product terms, reference price source |
The general difference between pre-IPO and IPO-stage investing is covered in pre-IPO vs IPO investing.
Anthropic on OpenStocks
Anthropic is live on OpenStocks as oANTHROPIC, a BEP-20 token on BNB Chain that provides economic price exposure only. It confers no shares, voting, dividends or information rights, and will not convert into Anthropic IPO shares. OpenStocks is not affiliated with Anthropic, and the product is not available to US persons or anyone in the United States.
If you hold or are considering oANTHROPIC ahead of the listing, read what OpenStocks tokens are not and the oANTHROPIC token explainer first, then the risk section in risks of tokenized pre-IPO exposure. Event-driven volatility around a filing or pricing can be sharp, and liquidity is never guaranteed. For the share-based routes eligible investors use, see how to buy Anthropic shares before the IPO.
Risks the IPO will put in the spotlight
Compute commitments. Around 80% of commitments are reportedly non-cancellable or pay-regardless, against customers who are often not on long-term contracts.
Concentration. Two customers made up nearly a quarter of 2025 revenue.
Partner conflicts. Google and Amazon are investors, suppliers and distributors at once.
AI-specific liability. The draft reportedly warns about autonomous agent behaviour and unsettled law on agent liability.
Valuation. A target above $2 trillion is more than double the Series H price set a few months earlier.
Anthropic will also be compared with other AI-era listings and filings: SpaceX listed in June 2026, while names like Neuralink remain private with no filing at all (see Neuralink IPO date).
How to invest in Anthropic before and after the IPO
"How to invest in Anthropic" is the most-searched question around the company, and the honest answer depends on timing and where you live.
Before the IPO
Private secondaries and SPVs. Limited to accredited or professional investors, usually with high minimums and fees, and dependent on Anthropic approving transfers.
Funds with an Anthropic position. Indirect and diluted, with management fees and carry.
Tokenized price exposure. OpenStocks lists Anthropic for eligible users outside the US and other prohibited jurisdictions, in markets such as Hong Kong, the UAE, the UK and the EU; eligibility depends on your jurisdiction (see the Terms). The token tracks economic price exposure on BNB Chain and confers no ownership, voting, dividends or information rights.
At the IPO
IPO allocations go mainly to institutions. Some retail brokers offer access to US IPO allocations, but availability for non-US clients varies and large deals are usually oversubscribed.
After listing
Once shares trade, anyone with a broker that offers US stocks can buy them. Expect volatility in the first weeks and a lock-up expiry, typically around 180 days after listing, when insiders can start selling.
Anthropic's listing is also a test for other AI-era companies waiting in line. Databricks' CEO has said he would rather not list ahead of the big AI labs (see Databricks IPO).
Key takeaways
Anthropic confidentially filed a draft S-1 on 1 June 2026; no public S-1 yet.
Reports point to a listing after the 3 November 2026 midterms, at a target above $2 trillion.
The draft reportedly shows ~$4.6B 2025 revenue, an $8.06B operating loss and $20.28B in cash.
Founders would keep 50.1% of key votes through a Class F share.
No ticker or exchange is set. oANTHROPIC is price exposure only and does not convert into IPO shares.
FAQ
Is Anthropic publicly traded?
No. It has filed confidentially for an IPO but has not listed as of October 2026.
When will Anthropic go public?
No date is confirmed. Late-September reporting expected a listing after the November 2026 US midterms, subject to SEC review and market conditions.
What will Anthropic's IPO valuation be?
The draft prospectus reportedly targets more than $2 trillion. The final figure depends on pricing.
Can I buy Anthropic stock before the IPO?
Only through private secondary channels for eligible investors. Eligible non-US users can access price exposure, not shares, through oANTHROPIC on OpenStocks.
What happens to Anthropic tokens on OpenStocks at the IPO?
They follow the product's published terms for a listing event. Read those terms before the IPO rather than after; they are separate from what happens to shareholders in the company.
Disclaimer
OpenStocks tokens represent economic price exposure only. They do not confer ownership, voting rights, dividends or information rights. OpenStocks is not affiliated with Anthropic or any company mentioned. Not available to US persons or persons in the United States. Eligibility depends on your jurisdiction; see the Terms for the full list of prohibited jurisdictions. This is not investment advice and not an offer of securities. High risk, including possible total loss. Liquidity is not guaranteed.
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