Nasdaq s&p 500

U.S. stocks tumbled as trade tensions escalated, with the Dow erasing a 1,400-point gain to close down 300 after the White House ruled out tariff exemptions. The S&P 500 and Nasdaq fell sharply as new 104% tariffs on China took effect. Despite the sell-off, retail investors bought the dip, targeting tech stocks like Apple and Nvidia. Volatility spiked amid conflicting trade reports, with Beijing vowing retaliation and the EU preparing countermeasures.”