Stocks end turbulent week with more losses

Wall Street capped a turbulent week of trading Friday with the biggest weekly loss since March as traders fret over rising trade tensions between Washington and Beijing and signals of slower economic growth.

The latest wave of selling erased more than 550 points from the Dow Jones Industrial Average, bringing its three-day loss to more than 1,400. For the week, major indexes are down more than 4 percent.

Worries that the testy U.S.-China trade dispute and higher interest rates will slow the economy has made investors uneasy and stoked the recent volatility.

The S&P 500 index fell 2.3 percent Friday, ending lower three out of the last four weeks. The Dow dropped 2.2 percent and the Nasdaq composite slid 3 percent.

The S&P 500 and Dow are now in the red for the year again. The Nasdaq was holding on to a modest gain.