Dow industrials drop 600 points, extending a weeklong slump

U.S. stocks slumped Friday, pulling down the Dow Jones industrial average by more than 600 points and placing the market on track for its worst week in two years.Technology and energy stocks accounted for much of the broad slide as several major companies, including Exxon Mobil and Google's parent company, Alphabet, sank after reporting weak earnings.Investors have grown increasingly worried that a rapid rise in interest rates, spurred by higher inflation, could derail the market's strong and ca