Anthropic Files for IPO: What the S-1 Reveals

Anthropic, the company behind Claude, has officially filed to go public. If it gets the valuation people are talking about, it could be the largest tech listing anyone has seen. TechCrunch flagged the filing on X as the numbers started coming out.

What happened

On October 26, Anthropic announced that it had filed a Form S-1 with the US Securities and Exchange Commission. It plans to list Class A shares on the Nasdaq under the ticker "ANT." The share count and price range haven't been set yet, and Goldman Sachs and Morgan Stanley are leading the deal. The company had filed a confidential draft back in June.

The public filing puts real numbers on a company that has been mostly a black box. Per CNBC's read of the S-1:

• Revenue for the first half of 2026 was $16.29 billion, up from $1.16 billion a year earlier.
• The net loss for the same six months was $80.7 billion. About $72 billion of that is an accounting charge from convertible notes rising in value as the company's valuation climbed, not cash going out the door.
• It has about $417 billion in compute commitments, with another $125 to $150 billion ordered for 2028 to 2031.
• It has about 5,300 employees and more than 11,900 customers paying over $100,000 a year.

Engadget reports the IPO could value Anthropic at around $2 trillion, with trading expected to start in mid-November.

Why it matters

The part I find most interesting isn't the money. It's the control structure. A Founder LLC run by Dario and Daniela Amodei and five other co-founders will hold 50.1% of the voting power through Class F stock, and the Long-Term Benefit Trust elects a majority of the board through Class T stock. Public shareholders get the economics but not much say over who runs the place.

The filing also lists more than 90 pages of risk factors, including the Pentagon labelling it a "supply chain risk" and a warning about possible "material revenue losses." Long risk sections are normal for an S-1, but those two stand out.

For everyone else, this matters because the money raised goes into compute, and that shapes how fast Claude and its rivals improve and what they cost to use.

What to do

• If you're thinking about buying in, wait for the price range and the final prospectus. A listing this hyped can swing hard in its first weeks.
• Read the governance section before you buy. You'd be owning shares with almost no voting power.
• If you use Claude at work, nothing changes today. Plans and pricing stay the same until Anthropic says otherwise.

Anthropic is also dealing with other legal fights right now, including the Elvis Presley estate lawsuit over AI training.