Key Points
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Secondary markets are pricing the Anthropic IPO at $2 trillion.
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Anthropic, maker of the Claude large language model, has submitted an S-1 form to the SEC ahead of a public offering.
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Amazon holds a reported 21% stake in Anthropic, valued at $190.4 billion as of June 30, 2026.
Amazon’s stake in Anthropic, now valued at $190.4 billion, stems from its $8 billion investment in 2024 and a subsequent $5 billion investment in 2025. As Anthropic approaches its IPO, secondary market valuations have surged; initially estimated at $965 billion in June, it’s now being valued over $2 trillion. If successful, Amazon’s stake could be worth approximately $420 billion.
This valuation trend significantly impacts Amazon’s market capitalization, which was $2.566 trillion as of June 30, 2026. Anthropic’s increasing importance is evident; it constituted only 3.4% of Amazon’s market cap in March but rose to 7.4% by June, with future estimates suggesting it could represent nearly 15% of Amazon’s value if the IPO reaches the higher valuation.
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