Anthropic Files S-1 for Nasdaq IPO as "ANT": Date, Valuation and Key Numbers

Key takeaway: Anthropic, the company behind Claude, publicly filed its S-1 with the US SEC on 26 October 2026. It plans to list its Class A shares on the Nasdaq Global Select Market under the ticker “ANT”, with Goldman Sachs and Morgan Stanley leading the deal. The number of shares, the price range and the IPO date are not set yet. Earlier Reuters and Bloomberg reports pointed to a listing in mid-November 2026.

Research-based news, not investment advice. Figures come from Anthropic’s announcement, the SEC filing record and reporting by CNBC, Reuters and Bloomberg, checked 26 October 2026. Dates and numbers can change. All amounts are in USD.

What Anthropic confirmed on 26 October

• The filing: Anthropic, PBC filed a registration statement on Form S-1 for a proposed IPO of its Class A common stock. (Anthropic, SEC EDGAR)
• Exchange and ticker: Nasdaq Global Select Market, symbol ANT.
• Banks: Goldman Sachs and Morgan Stanley are the lead underwriters. CNBC lists about 20 other banks in the group.
• Not set yet: how many shares will be sold and at what price range. The registration is not yet effective, so no shares can be sold until the SEC clears it.

CNBC reports that Anthropic filed confidentially with the SEC in June, which is why the full numbers only became public now.

Anthropic IPO date: what’s reported

There is no official IPO date. Before the filing, Reuters (22 October) and Bloomberg (1 October) reported, citing people familiar with the matter, that Anthropic aimed to list in mid-November 2026, with investor marketing from the week of 9 November, possibly trading before the US Thanksgiving holiday on 26 November. (Reuters via Investing.com, Bloomberg via Yahoo Finance) Both said the timeline could change.

Key numbers from the S-1, as reported by CNBC

All from CNBC’s 26 October coverage of the filing (CNBC):

Figure	Amount
Revenue, first half of 2026	$16.29 billion, up from $1.16 billion a year earlier
Revenue, full year 2025	$4.59 billion
Net loss, first half of 2026	$80.7 billion, up from $12.9 billion a year earlier
Net loss, full year 2025	about $41.9 billion
SpaceX compute deal	about $3.1 billion a month once fully delivered, up to $120.5 billion into 2029
Microsoft commitment	at least $44.9 billion

CNBC also reports that no single customer made up more than 10% of revenue in the first nine months of 2026, and that a founders’ entity (Founder LLC, held by Anthropic’s seven co-founders) will hold 50.1% of the voting power.

Anthropic IPO valuation

No valuation is set by the filing, because there is no price range yet. Reported investor views before the filing ranged from $1.5 trillion (Reuters, 22 Oct) to $1.8 to $2 trillion (Bloomberg, 1 Oct) and more than $2 trillion (Reuters, 28 Sep, on a prospectus it had seen). (Reuters) These are reported targets, not a price.

Why the timing matters

Reuters says Anthropic’s IPO “stands alone” while other AI infrastructure companies have delayed listings. CNBC notes it lands a few months after SpaceX’s record Nasdaq debut and during a rough month for AI cloud stocks. So the listing is likely to be read as a test of investor appetite for AI companies.

Can you buy Anthropic IPO shares?

Not yet. There are no shares to buy until the registration becomes effective and the listing happens. After that, access depends on your broker and the local rules on buying US shares. We can’t tell you whether to invest. Speak to a licensed adviser before acting on any IPO news.

What it means for Claude users

The filing doesn’t announce changes to Claude plans or prices. If you rely on Claude in your business, the useful habit is the same before and after any IPO: keep your workflows portable, so you can switch models if prices or terms change. Our ChatGPT vs Claude vs Gemini comparison shows how the three assistants differ on plans and prices, and our n8n vs Make vs Zapier guide covers automation tools that aren’t tied to one model. AIFix Automation sets up follow-ups and reminders on accounts in your name. That’s our own service.

FAQ

When is the Anthropic IPO date?

Not set. Anthropic filed its public S-1 on 26 October 2026. Earlier reports pointed to mid-November 2026, but no official date or price range has been announced.

What is Anthropic’s stock ticker?

Anthropic plans to list on the Nasdaq Global Select Market under the ticker “ANT”.

What is the Anthropic IPO valuation?

Not set. Reported investor views range from $1.5 trillion to more than $2 trillion.