Summary

U.S. stocks plunged Thursday after Trump announced sweeping tariffs on nearly all imports, triggering a global market sell-off.

The S&P 500 dropped over 4%, the Dow fell 3.7% (1,700 points), and the Nasdaq lost nearly 5%, wiping out trillions in value.

Retail and small-cap stocks were hit hard. New tariffs—up to 54% on some countries—spark fears of stagflation and global recession.

Economists warn reversing trade deficits could lower U.S. wages. Auto tariffs took effect overnight, worsening investor concerns after the worst quarter for markets in years.