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Anthropic, the developer of the AI model Claude, formally filed for an initial public offering on the Nasdaq on October 26, 2026, under the ticker symbol 'ANT'. Reports from Yonhap, Maeil Business Newspaper, and Chosun Ilbo say the company submitted its securities registration statement to the U.S. SEC that day, with potential valuations reaching up to $2 trillion (about 2,700 trillion won), which could make it the largest IPO ever. The filing comes as Anthropic's CEO warns that advanced AI could pose existential risks, according to Korea Times and Business Korea. The news has revived AI investment sentiment: Korea Times reports Seoul stocks rebounded Tuesday, led by semiconductor heavyweights, and Chosun Ilbo notes the Nasdaq rose 0.82% on October 26 as AI stocks bounced back. Korean media, including Dong-A Ilbo and Kyunghyang Shinmun, frame the IPO as a test of AI industry growth and profitability amid rising sales and massive infrastructure costs.