Anthropic filed a confidential S-1 with the SEC on June 1, confirming its IPO plans. Amazon has invested a total of $33 billion in the AI company, with its stake growing from $74.2 billion in Q1 to $190.4 billion in Q2 2026, an appreciation of over $116 billion in a single quarter. Anthropic raised $65 billion in a Series H funding round, valuing it at $965 billion post-money, with annualized revenue of approximately $47 billion. If the IPO prices near this valuation, it would rank among the largest public offerings in history.
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