Artificial intelligence company Anthropic has quietly filed an S-1 form and plans to go public as early as October. The company’s most recent funding round valued it at $965 billion, while secondary market trading implies a valuation of approximately $1.2 trillion. Amazon As a major investor in Anthropic, Amazon has invested over $13 billion and holds a 15% to 20% stake in the company. Based on a $1.2 trillion valuation, the value of ’s stake is estimated to be between $180 billion and $240 billion. Amazon In the first quarter of 2026, the company realized $16.8 billion in pre-tax gains from its investment in Anthropic. In addition, the majority of the new funds raised by Anthropic following its successful IPO will be allocated, as per the contract, to cloud infrastructure and AI chips for Amazon (AWS).