NEW YORK (Reuters) - The Nasdaq composite extended losses and fell more than 4 percent on Tuesday, weighed down by a sell-off in large-cap technology companies, including Apple , Microsoft and Google .
Highlights:
* Dow component IBM Corp
* The Dow Jones industrial average <.DJI> was down 173.15 points, or 2.09 percent, at 8,108.07. The Standard & Poor's 500 Index <.SPX> was down 25.68 points, or 3.02 percent, at 824.44. The Nasdaq Composite Index <.IXIC> was down 57.20 points, or 3.74 percent, at 1,472.13.
(Editing by Chizu Nomiyama)
