U.S. stocks plunged significantly, with the Dow Jones Industrial Average dropping by 800 points amid mounting worries about inflation and tariffs. According to a University of Michigan survey, consumer sentiment hit a 15-month low, coupled with a notable rise in inflation expectations. UnitedHealth faced a 9% decline in its shares following a reported Justice Department investigation into its Medicare billing practices by the Wall Street Journal. Uncertainty surrounding federal government policies and proposed tariffs played a part in painting a bleak picture for the U.S. economy.