Selling on Wall Street intensified in late afternoon Friday, with the Dow Jones Industrial Average losing more than 330 points. The blue-chip average is on track for its biggest one-day point decline since October, down 346 points, or 1.9% to 17,759.54. The main indexes are on track to record weekly loss after two straight weeks of gains. The S&P 500 is down 30 pints, or 1.5%, to 2,074.25. Consumer discretionary and tech stocks were hit the hardest, while all 10 main sectors were trading with solid losses. The Nasdaq Composite is down 90 points, or 1.8%, to 4,917.37.
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