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Anthropic, the developer of the AI model Claude, has filed for an initial public offering (IPO) on the Nasdaq, with market observers suggesting it could be the largest IPO in history. The filing was submitted to the U.S. Securities and Exchange Commission (SEC) on October 26, 2026, according to reports from Yonhap, Reuters, and Bloomberg. The company plans to list under the ticker symbol 'ANT'. The IPO is seen as a test of the AI industry's growth and profitability, given Anthropic's surging revenue and massive infrastructure investment costs. Yonhap reports that the filing could be the largest ever, with the Hankyoreh citing a possible valuation of 136 trillion won. The Korea Times notes that CEO's warning about AI's existential risks contrasts with the IPO move.