Anthropic Files to Go Public: What Its First Public Numbers Show
Claude's maker filed its S-1 with the SEC on October 26. Revenue hit $16.3 billion in the first half of 2026, and an $80.7 billion net loss is mostly a non-cash accounting charge. It plans to list on Nasdaq as ANT, with no price set yet.
Anthropic, the company behind the Claude AI models, filed paperwork with the SEC on Monday, October 26 to become a public company. It’s the top story on Techmeme, near the top of Hacker News, and “Anthropic” and “$ANT” are both trending on X. Here’s what the filing actually says.
The filing
Anthropic announced that it has filed a registration statement on Form S-1 and plans to list on the Nasdaq Global Select Market under the ticker ANT. The number of shares and the price range haven’t been set yet, so there’s no IPO price to talk about. You can read the full S-1 on the SEC’s website.
Revenue went through the roof
For the first six months of 2026, Anthropic reported about $16.3 billion in revenue, compared with about $1.16 billion in the same period of 2025, per CNBC. For context, its revenue for all of 2025 was about $4.6 billion.
That huge loss, explained
The headline number that’s raising eyebrows is an $80.7 billion net loss for the half, up from $12.9 billion a year earlier. But most of it isn’t money leaving the building. About $72 billion is a non-cash accounting charge: as Anthropic’s valuation rose, the fair value of convertible notes and similar instruments went up, and accounting rules book that as a loss.
The operating picture looks very different. VentureBeat reports an operating loss of $693 million, down from $2.14 billion a year earlier, and positive operating cash flow of $3.93 billion. Compute alone cost about $8.95 billion in the half.
The risk section is unusually blunt
Every S-1 lists risks, but Anthropic’s goes further than most. According to The Verge, the filing warns that a “catastrophic” AI incident could create liability that no single insurer, “and potentially the insurance industry in the aggregate,” could cover.
The Verge also details massive compute commitments, including roughly $44.9 billion with Microsoft through 2033, at least $114.5 billion with Google through 2033, and $110 billion with Amazon over ten years.
What’s next
The filing kicks off the formal IPO process, but key details like the share price are still to come. The Wall Street Journal has reported, citing people familiar with the plans, that Anthropic is aiming to price the week of November 16; the company hasn’t confirmed a date. (As always, this is news, not investment advice.)
So here’s the question: would you trust an AI company more or less for spelling out its own worst-case risks in public?
