
Anthropic, the maker of Claude, is preparing what could be the largest IPO on record, at a valuation reports put between $1.5 trillion and $2 trillion. The stakes reach beyond one company: Amazon, Google, Microsoft and Nvidia are at once its investors, its suppliers and its sales channels, and its listing will be a public test of the AI spending boom. This page tracks the filing, the valuation and the risks, and what each possible outcome would mean for the US economy.
Anthropic confidentially filed for an IPO in June and could list as soon as mid-November, at a valuation reports put between $1.5 trillion and $2 trillion. Versions of its draft filing seen by Reuters and the Wall Street Journal show fast revenue growth alongside large losses and hundreds of billions of dollars in long-term computing commitments, much of it owed to Amazon, Google and Microsoft. The public filing, which must appear at least 15 days before marketing begins, has not been released.
What would change this rating ↓
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When the IPO could happen and at what value, from the filing rules and attributed reporting. We update it as filings land. These are signals for our risk rating, not a prediction.
Public S-1 not yet filed. Earliest pricing is about three weeks after it appears. As of Oct 21.
Shading shows where a pricing would move our rating. The per-share price range is not set yet; it will appear in an amended S-1.
The rating measures the risk Anthropic's IPO poses to the US economy, judged on events we can document, not on our view of what the company is worth. Any one of these would move it.
The outcomes we are watching for, what each would look like, and what we have seen so far.
| Outcome | What we would see | Risk to the economy |
|---|---|---|
| 1. The IPO doesn't happen | The public filing never appears, the roadshow is postponed without a new date, or the offering is withdrawn. So far: the schedule has slipped from October to November (WSJ, via Crypto Briefing), but Bloomberg reports marketing could start the week of Nov. 9 (Yahoo Finance). | High |
| 2. It happens but falls short or slumps | A smaller raise, a price range below the reported target, pricing at the bottom of the range, or shares falling after listing. So far: some existing and prospective investors have argued for about $1.5 trillion instead of $2 trillion after third-quarter results fell short of expectations (Reuters, via CP24). | High |
| 3. It happens at the hoped-for valuation | Pricing at or above about $2 trillion and steady trading. So far: attendees at Anthropic's Oct. 14 investor day came away optimistic, Reuters reported (via KFGO), and a prediction market gives 75% odds that Anthropic officially announces an IPO this year (CNBC). | Lower near term |
The competing numbers, and who put them forward. Anthropic has not published a valuation target or a price range.
The most-shared claims, and what public sources can confirm.
Origin. Posts and newsletters since Sept. 28 describing a “leaked prospectus.”
What the evidence shows. Reuters and the Wall Street Journal have reported from copies of the confidential drafts (The Star; WSJ). New Constructs says the S-1 was “selectively disclosed” to a few parties (CNBC). We have not found the document itself posted publicly.
Bottom line. Drafts have reached reporters; the text is not public.
Origin. OpenAI, which has told investors and employees that Anthropic's accounting “inflates” its revenue by billions.
What the evidence shows. Anthropic counts the full value of sales made through cloud marketplaces as revenue and records the platforms' cut as a cost; OpenAI records revenue net of partners' shares. Anthropic says it follows established accounting practice (Reuters, via The Star and CP24).
Bottom line. A dispute over accounting method between rivals; the public filing and the SEC's review will settle what is reported.
Origin. Investors quoted by the Financial Times in August, then banker and investor talk reported by Reuters, Bloomberg and the WSJ.
What the evidence shows. No price has been set; Anthropic's last private valuation was $965 billion in May (Orrick), and some investors now argue for about $1.5 trillion (Reuters, via CP24).
Bottom line. A target in talks, not a market price.
Origin. The Wall Street Journal's Oct. 20 report on the new draft, and posts relaying it.
What the evidence shows. The Journal reports an $80.7 billion net loss for the first half of 2026 (WSJ). In the earlier draft, about $34 billion of the 2025 net loss of roughly $42 billion came from accounting charges on financing that could convert into shares, not from running the business (CNBC; Reuters, via KFGO). Posts relaying the Journal say most of the new loss is also non-cash; we have not yet read that part of its report.
Bottom line. The figure is reported, but much of such losses has been accounting charges, not cash spent.