AI startup Anthropic, the San Francisco-based maker of the Claude assistant, officially filed its long-awaited S-1 prospectus on Monday, October 26, 2026, trading under the proposed ticker ANT. While terms were not disclosed in the initial filing, IPO analysts estimate the offering could raise approximately $75 billion—rivaling historic market debuts—with a projected valuation soaring near $1.5 trillion. Marketing for the high-profile public offering is widely anticipated to kick off the week of November 9, spearheaded by lead global book-runners Goldman Sachs and Morgan Stanley alongside a syndicate of more than 20 banks.
The financial disclosures offer a revealing look at the explosive growth and staggering costs driving the artificial intelligence sector. As of September 30, 2026, Anthropic reported a robust enterprise footprint, boasting over 11,900 customers generating $100,000 or more in trailing twelve-month (TTM) revenue, including roughly 250 accounts surpassing the $10 million threshold. However, the prospectus underscores that the company remains unprofitable, registering a net loss of $109.74 billion against $19.7 billion in revenue for the twelve-month period ending June 30, 2026. Having raised an aggregate of $141.1 billion in capital by mid-2026, the company also cautioned investors in the filing regarding the potential existential risks inherent to its advanced AI technology.
