Markets tumble amid AI disruption and tariff chaos. U.S. stocks fell Monday as Anthropic's new Claude Code Security tool rattled cybersecurity investors, with IBM plunging nearly 13.2% and peers CrowdStrike and Palo Alto Networks also sliding. European markets declined 0.45% as Novo Nordisk sank over 15% following disappointing weight loss drug trial results. Bitcoin lost more than 5%, falling below $63,000, nearly half its October record high. Trade uncertainty intensified after the Supreme Court ruled Trump's reciprocal tariffs illegal, prompting the EU to put its U.S. trade deal on hold. FedEx became the first major American company to sue for a full tariff refund. Standard Chartered CEO Bill Winters warned that tariff uncertainty dampens investment and expects continued intense U.S.-China competition reshaping global markets and innovation strategies.
