Mid-Afternoon Market Update: Groupon Shares Continue to Show Weakness Following Earnings as Isis Pharmaceuticals Rallies

Toward the end of trading Friday, the Dow traded up 0.10 percent to 16,144.28 while the NASDAQ surged 0.13 percent to 4,273.97. The S&P also rose, gaining 0.07 percent to 1,841.86. Leading and Lagging Sectors In trading on Friday, healthcare shares were relative leaders, up on the day by about 0.65 percent.