Anthropic Files for Record-Breaking IPO as AI Frontier Lab Seeks Public Listing

Anthropic, the AI safety-focused startup behind the Claude foundation model, filed for an initial public offering on October 26, with plans to debut on the Nasdaq under the ticker ANT in a potential record-breaking listing that could value the company between $1.5 trillion and $2 trillion. The Form S-1 filing marks the first mega-IPO from a frontier AI laboratory, arriving just months after the company raised a $65 billion Series H round at a $965 billion valuation in May 2026.