Anthropic may have to accept a lower valuation than the $1.5 trillion it had been targeting for its stock market debut, after a sharp tech sell-off spooked key investors, the Wall Street Journal reported Thursday. The listing comes amid growing nervousness among investors about the huge sums being poured into AI. Three major investors who plan to take part in the offering told the Journal the valuation would likely need to be lowered, with one saying it could end up closer to $1 trillion.