Anthropic's Record-Breaking IPO Awaits, Weighing on Amazon's Growth

Reports suggest that Anthropic, an AI lab valued at $965 billion, could file its S-1 by the end of the month. This move would be significant not only for Anthropic but also for major backers like Amazon, whose growth is intertwined with the start-up's trajectory.

Anthropic has already raised roughly $133 billion to date, with recent quarterly revenue surpassing $11.5 billion and an annualized run rate approaching $65 billion. The company aims for an initial public offering (IPO) that matches or exceeds Space Exploration Technologies' record raise from earlier this summer.

Amazon investors have good reason to monitor the Anthropic offering, as the tech giant has already invested $13 billion in Anthropic, with commitments for up to an additional $20 billion contingent on commercial milestones. The partnership between Amazon and Anthropic runs deep through AWS, with Anthropic using Amazon's custom silicon for training and inference.

Anthropic's S-1 will provide more precise disclosure around Amazon's ownership, which could help improve forecasts of AWS' revenue acceleration and operating margin expansion driven by Anthropic's compute demands. A fundamental rerating in Amazon stock could follow as investors gain a deeper understanding of Anthropic's influence on Amazon's position in the AI infrastructure supercycle.