Artificial intelligence (AI) company Anthropic is facing investor resistance over its proposed $1.5 trillion initial public offering (IPO), following a sharp decline in US technology stocks, The Wall Street Journal (WSJ) reported.Three prospective investors believe the valuation should be reduced, with one suggesting approximately $1 trillion, or $500 billion below earlier expectations.Anthropic has reportedly targeted a listing before Thanksgiving, aiming to raise up to $100 billion.