Anthropic Files Its S-1: $16.3B Revenue, an $80.7B Loss, and a November Debut as ANT

Anthropic publicly filed its S-1 registration statement with the SEC on October 26, confirming the listing that this blog has tracked through its rehearsal stages for a month: a Nasdaq debut under the ticker ANT, with the price range and share count left blank pending the roadshow and reporting, per WSJ and Bloomberg, pointing at the week of November 16 and a raise of roughly $100 billion at a $1.5 to $2 trillion valuation. The registrant is Anthropic, PBC, the public benefit corporation structure that last week’s Public Benefit Fund announcement already put in context.

The numbers the market will argue about

The filing’s headline financials: $16.3 billion of revenue in the six months ended June 30, against $1.1 billion in the year-earlier period, roughly fourteen-fold growth. The net loss for the same half: $80.7 billion, up from $13 billion a year earlier. The loss figure needs its accounting context, which coverage from WSJ and follow-on analysis supplied quickly: a large majority of it, on the order of $72 billion, is non-cash adjustment from convertible notes and related instruments rather than operating cash burn, and FT’s read of the filing puts actual first-half compute and infrastructure spend around $9 billion, against roughly $800 billion in ten-year purchase commitments that make Meta’s $825 billion look like a peer group rather than an outlier. The quarter we covered from leaked investor figures in mid-October, $16.8 billion of Q3 revenue, now has an official first-half baseline underneath it.

Governance: the Class F, the founders, and the disclosures

Reuters reports the filing includes a Class F share structure giving the co-founders 50.1% voting control, joining the Zuckerberg and Musk tradition of public money with founder lock, and Fortune counts all seven co-founders at roughly $14 billion each pre-IPO. The risk-factor section runs 94 pages, and the disclosures go beyond boilerplate in ways that reward reading: the month-long training pause and the security breaches are disclosed in the filing itself; Axios notes a warning about “disproportionate and selective targeting from the Trump administration”; Bloomberg flags both climate change and TSMC disruption as cited business risks; and WSJ reports the filing warns a catastrophic AI incident could make insurance unobtainable. WSJ also highlights that Spark Capital is the sole venture firm called out, an unusual structure for a company that raised at venture pace to get here.

What to watch

Three things between now and the pricing. First, the roadshow book: a $100 billion raise would be the largest in history by a wide margin, and the demand signal from the discount war gripping enterprise AI will be visible in whether Anthropic can hold the $1.5 to $2 trillion range its leaks floated. Second, the governance discount: public-market investors have never priced a Class F with 50.1% founder control plus a public benefit corporation charter, and the spread between ANT’s voting and non-voting shares will be the market’s explicit price on trusting the founders. Third, the first post-listing quarter: Q4 closes three weeks after the expected debut, and the growth-deceleration question that started this month’s repricing gets its first auditable answer almost immediately. The month-long arc, from leaked revenue figures through the safety bill, the benefit fund, and now the filing, ends with the thing every prior story was actually about: the largest technology IPO ever attempted, priced on whether fourteen-fold growth outruns an $800 billion commitment.