U.S. stocks closed narrowly mixed on Friday, winding down several turbulent trading days with gains for the week.

The Dow Jones industrial average fell 11.76 points, or 0.1 percent, to 16,643.01. The Standard & Poor's 500 index rose 1.21 points, or 0.1 percent, to 1,988.87. The Nasdaq composite gained 15.62 points, or 0.3 percent, to 4,828.32.