Markets React to Tariff Announcements and Nvidia's Decline The S&P 500 fell 1.59% to 5,861.57, with the Nasdaq Composite tumbling 2.78% due to Nvidia's 8.5% drop. President Trump confirmed tariffs on Mexico and Canada would proceed, intensifying concerns over trade policies. Rising jobless claims further fueled economic worries, while investors await inflation data later this week.1