U.S. stocks ended higher Friday, but the S&P 500’s rise left the index virtually flat for the week. The S&P 500 rose 36.88 points on Friday, or 0.7%, to close at 5,304.72. The Nasdaq Composite climbed 184.76 points, or 1.1%, to finish at 16,920.79, notching a fresh record close. The Dow Jones Read this story