Anthropic heads for the largest listing in history — with the AI backlash in its own filing

Anthropic is preparing a stock market listing that, according to reporting by CNBC and Fortune, targets a valuation of around two trillion US dollars. That would be the largest initial public offering ever.

For context: SpaceX went public in June at 1.77 trillion dollars and would hold that record for barely a quarter. Anthropic's most recent private round, its Series H, closed at 965 billion dollars. Annualised revenue stood at 65 billion dollars at the end of July. October is the expected window.

The most interesting part is not in the numbers. According to information obtained by CNBC, the filing will explicitly list the public backlash against artificial intelligence as a risk factor. A risk factor is not marketing copy but a legally binding disclosure to investors: it is where a company states what could damage its business.

With that, the most prominent AI provider is putting on the record, in a mandatory document, that public rejection can become a balance-sheet problem — litigation, regulation, customer churn, resistance in the labour market. For an industry that long treated criticism as a misunderstanding, that is a change of tone.

Going public also changes the cadence. As a private company Anthropic could weigh safety decisions internally. As a listed company a quarterly rhythm arrives in which every act of restraint must be justified to investors. How that sits with a firm that has made safety research core to its identity is the genuinely open question.

The move comes amid conspicuously heavy investment: we covered the multibillion-dollar Broadcom order for in-house chips and the hiring of Amir Salek for Anthropic's chip effort. A listing of this size is also how that gets funded. At the same time, economists at the European Central Bank are warning of a valuation bubble in AI stocks — both land in October.