U.S. stocks extended losses on Friday, with the Nasdaq turning negative, weighed by biotechnology and chipmaker shares including Broadcom Corp
Among the top decliners was software company CA Inc
The Nasdaq rose more than 1 percent at the open lifted by gains in Amazon.com
The Dow Jones industrial average <.DJI> dropped 65.90 points, or 0.65 percent, to 10,015.41. The Standard & Poor's 500 Index <.SPX> dropped 7.98 points, or 0.73 percent, to 1,084.93. The Nasdaq Composite Index <.IXIC> dropped 1.89 points, or 0.09 percent, to 2,163.40.
(Editing by Kenneth Barry)