At the close, the Dow was down about 76 points, the Nasdaq was down about 31 points, and the S&P 500 was down about 11 points
The Dow and S&P 500 fell for the third week in a row, down about 83 points and 4 points this week, respectively. The Nasdaq fell for the second straight week, closing about 25 points down.
The Dow rose about 56 points, with Merck and DuPont gaining and Bank of America and Cisco falling
Stocks on the Dow gained Friday. But the Dow average closed lower for the week, which turned out to be tumultuous for stocks.