The Dow Jones industrial average suffered its second triple-digit loss in a row on Thursday after so-so economic news and violence in Iraq rattled investors. The blue chips are on track for their first weekly loss in four weeks.
The Dow Jones industrial average fell 109.69 points, or 0.7 percent, to 16,734.19.
The Standard & Poor's 500 index was down 13.78 points, or 0.7 percent, to 1,930.11.
The Nasdaq composite fell 34.30 points, or 0.8 percent, to 4,297.63.
For the week:
The Dow is down 190.09 points, or 1.1 percent.
The S&P 500 is down 19.33 points, or 1 percent.
The Nasdaq is down 23.76 points, or 0.6 percent.
For the year:
The Dow is up 157.53 points, or 1 percent.
The S&P 500 index is up 81.75 points, or 4.4 percent.
The Nasdaq is up 121.04 points, or 2.9 percent.