NEW YORK (Reuters) - U.S. stocks opened modestly higher on Friday, with the Nasdaq outperforming on the back of strong results from companies such as Amazon and Microsoft .
The Dow Jones industrial average was up 10.21 points, or 0.07 percent, at 15,519.42. The Standard & Poor's 500 Index was up 3.10 points, or 0.18 percent, at 1,755.17. The Nasdaq Composite Index was up 24.17 points, or 0.62 percent, at 3,953.13.
(Reporting by Ryan Vlastelica; Editing by Bernadette Baum)