Anthropic, the company behind Claude AI models, has brought Citigroup into its IPO banking team, joining Morgan Stanley, Goldman Sachs, and JPMorgan Chase. The company filed a confidential S-1 with the SEC on June 1, 2026, officially launching the IPO process. With a post-money valuation of $965 billion from its Series H funding round, Anthropic is targeting a Nasdaq listing as soon as October 2026, which could become the largest AI company IPO ever.
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