U.S. Stocks Open Lower as Growth Fears Roil Markets

U.S. stocks opened lower Friday, the dollar surged, and Treasury yields jumped, after investors were jolted by new signs of slowing global growth and U.K. plans for big, debt-funded tax cuts. 

The S&P 500 dropped 1.2% shortly after the opening bell. The Dow Jones Industrial Average fell 334 points, or 1.1%, and the Nasdaq Composite declined 1.2%. The three indexes were on track for their fourth consecutive day of declines.