U.S. stocks are closing sharply lower as lackluster news about the economy and declines in airline stocks weigh on the market.
The Dow Jones industrial average fell by more than 100 points for the second straight day on Thursday. It ended down 109 points, or 0.7 percent, to 16,734. The Standard & Poor's 500 index fell 13 points, also 0.7 percent, to 1,930. The Nasdaq dropped 34 points, or 0.8 percent, to 4,297.