NEW YORK (Reuters) - U.S. stocks fell in afternoon trading on Wednesday, with major indexes erasing earlier gains as a shooting at the Canadian parliament unnerved investors and Boeing and Biogen sold off following results.
The Dow Jones industrial average <.DJI> fell 151.05 points, or 0.91 percent, to 16,463.76, the S&P 500 <.SPX> lost 14.04 points, or 0.72 percent, to 1,927.24 and the Nasdaq Composite <.IXIC> dropped 36.63 points, or 0.83 percent, to 4,382.85.
(Reporting by Yasmeen Abutaleb; Editing by Nick Zieminski)
