Stocks dip as investors stay wary over AI disruption

Global shares fell for a second day amid uncertainty over new U.S. tariffs and renewed worries about AI-driven disruption; a 10% across-the-board tariff took effect Tuesday after the Supreme Court ruling.

Global markets opened under pressure as investors reacted to fresh U.S. tariff moves and revived concerns about artificial intelligence. The U.S. president announced a 10 per cent across-the-board tariff that came into effect on Tuesday and later mentioned 15 per cent without clarifying timing. The Supreme Court had recently ruled the earlier emergency tariffs unlawful, adding to uncertainty about trade agreements and refunds. The article also highlights renewed debate about AI's long-term economic effects and heavy corporate spending in that area. Key developments: - The Supreme Court ruled the prior emergency tariffs unlawful, as reported in the article. - The president announced a 10% across-the-board tariff that took effect Tuesday and later spoke of 15%, with timing unclear. - Global shares fell for a second day; the article reports the S&P 500 slid about 1% and the Nasdaq fell roughly 1.1% on Monday. - The article mentions Nvidia will report earnings after the bell on Wednesday and notes its large weight in the S&P 500. - The article reports that FedEx has sued seeking a refund related to the tariff measures. Summary: The immediate impact has been a pullback in equities as markets weigh unclear U.S. trade policy and renewed AI-related concerns. The article notes Nvidia's upcoming earnings report as a near-term market focus, while the legal and refund implications of the tariff changes remain undetermined at this time.