Stocks closed lower on the final trading day of 2017, capping the best year for the Standard & Poor's 500 index in four years.
Losses in the technology, financial and health care sectors accounted for much of the broad market slide Friday. Trading was light ahead of the New Year's Day holiday.
The S&P 500 index fell 13.93 points, or 0.5 percent, to 2,673.61.
The Dow Jones industrial average dropped 118.29 points, or 0.5 percent, to 24,719.22.
The Nasdaq composite slid 46.77 points, or 0.7 percent, to 6,903.39.
The Russell 2000 index of smaller-company stocks gave up 13.41 points, or 0.9 percent, to 1,535.51.
For the week:
The S&P 500 fell 9.73 points, or 0.4 percent.
The Dow fell 34.84 points, or 0.1 percent.
The Nasdaq fell 56.57 points, or 0.8 percent.
The Russell 2000 fell 7.41 points, or 0.5 percent.
For the year:
The S&P 500 rose 434.78 points, or 19.4 percent.
The Dow rose 4,956.62 points, or 25.1 percent.
The Nasdaq rose 1,520.27 points, or 28.2 percent.
The Russell 2000 rose 178.38 points, or 13.1 percent.