Anthropic is advancing plans for a U.S. initial public offering, including a proposed Japanese-market sale of up to ¥552.9 billion ($3.5 billion) in newly issued shares. The company filed its IPO prospectus on October 26 and is seeking a Nasdaq listing under the symbol ANT, but has not finalized its offering price or share count. Proceeds from the Japanese sale would fund working capital, operating expenses and capital spending. The listing has become a test of investor appetite for AI companies amid debate over valuation, slowing sequential growth and infrastructure financing. CNBC commentator Jim Cramer warned that bearish investors sought to derail the IPO, although he provided no evidence of a coordinated effort.