Anthropic Files for Nasdaq IPO at Up to $2 Trillion Valuation, Igniting Broad AI Rally

Anthropic, the maker of the Claude AI assistant, filed its S-1 registration statement with the SEC on October 26, formally launching what is expected to be one of the most significant technology IPOs in years. The company is targeting a Nasdaq listing under the ticker ANT and seeking a valuation of up to $2 trillion, with Goldman Sachs and Morgan Stanley leading the offering, the same banks that ran SpaceX's record $86.2 billion listing in June.

The 335-page filing lays out a business growing at a striking pace but burning through capital just as fast. Revenue rose roughly 50% in the September quarter, a sharp deceleration from more than doubling in the prior quarter, and the company explicitly warned that its growth "may not be sustainable over time." First-half losses reached approximately $80 billion, and the company disclosed computing commitments totaling roughly $637 billion. Revenue per employee exceeds $6.6 million, and the company generates $2.08 in revenue for every $1 spent on AI compute. Anthropic also disclosed a month-long training pause and AI security breaches, and its nearly 100 pages of risk factors include warnings about potential existential harm from advanced AI systems.

The filing carries structural details that could weigh on aftermarket trading. Early share unlock provisions for customers and employees are set for days 27 and 48 post-IPO, well ahead of the standard 180-day lock-up, raising the prospect of significant selling pressure shortly after the debut. The company also disclosed an unusual succession plan involving confidential lists of individuals who could assume founders' voting control, reflecting the dual-class structure common to major tech listings.

The announcement immediately revived enthusiasm for the AI trade. The S&P 500 rose 0.70% to 7,677, the Nasdaq Composite gained 0.82% to 26,169, and the Nasdaq 100 climbed 1.1%, with a key semiconductor index jumping 2.8%. Nvidia, AMD, and Broadcom each gained more than 2%, while ARM surged 6.19%. Goldman Sachs and Morgan Stanley shares also rose on news of their lead roles. The rally extended overnight into Asia, where Japan's Nikkei climbed nearly 2% on Tuesday as semiconductor stocks led gains across the region. The move came ahead of a packed week including earnings from Alphabet, Microsoft, and Amazon, as well as Wednesday's Federal Reserve rate decision with the 10-year Treasury yield holding near 4.99%.