Written by Associated Press
Another wave of selling rocked Wall Street, plunging major indexes back into the red for the year.
Steep drops in favorites like Amazon pulled the market sharply lower Friday, capping an unusually turbulent week of trading.
The slide that began three weeks ago has put the S&P 500 on track for its worst month since February 2009.
The benchmark index is now 9.3 percent below the peak it reached in September.
The S&P 500 lost 46 points, or 1.7 percent, to 2,658.
The Dow Jones Industrial Average fell 296 points, or 1.2 percent, to 24,688.
It was down as much as 539 earlier.
The Nasdaq dropped 151 points, or 2.1 percent, to 7,167.
Bond prices rose as investors sought safety, sending yields lower.