U.S. stocks fell sharply Friday

U.S. stocks fell sharply Friday,caused by lower retail data and slumping commodities.

The S&P 500 SPX, -1.12% fell 22.93 points, or 1.1%, to 2,023.04. Consumer-discretionary and technology stocks led the decliners, while materials gained. The benchmark index fell 3.6% over the week.

The Dow Jones Industrial Average DJIA, -1.16% fell 202.83 points, or 1.2%, to 17,245.24 and lost 3.7% over the week. Among the blue-chip companies, 28 posted weekly losses, with Cisco Systems Inc. CSCO, -5.82% Exxon Mobil Corp. XOM, -1.65% Nike Inc. NKE, -3.27% and Apple Inc. AAPL, -2.92% falling more than 7% since Monday.

The Nasdaq Composite COMP, -1.54% declined 77.20 points, or 1.5%, to 4,927.88 and finished the week 4.3% lower.