NEW YORK, June 14 (Reuters) - U.S. stocks fell on Friday to close their third negative week in four as concern lingered over whether the world's central banks will soon begin to rein in stimulus programs.
The Dow Jones industrial average was down 105.90 points, or 0.70 percent, to end unofficially at 15,070.18. The Standard & Poor's 500 Index was down 9.64 points, or 0.59 percent, to finish unofficially at 1,626.72. The Nasdaq Composite Index was down 21.81 points, or 0.63 percent, to close unofficially at 3,423.56.
For the week, the Dow fell 1.2 percent, the S&P 500 lost 1 percent, and the Nasdaq slid 1.3 percent. All three U.S. stock indexes ended Friday's session with their third week of losses out of the past four.