A stock-market selloff intensified, wiping out hundreds of billions of dollars in value from the Magnificent Seven group of tech giants and pushing the Nasdaq down 3.6%. The S&P 500 and Dow lost 2.3% and 1.2%, respectively.

A stock-market selloff intensified, wiping out hundreds of billions of dollars in value from the Magnificent Seven group of tech giants and pushing the Nasdaq down 3.6%. The S&P 500 and Dow lost 2.3% and 1.2%, respectively.