U.S. stocks lost ground on Thursday as semiconductors dragged tech shares lower after a brokerage's bearish view of the industry and doubts about the strength of the economic recovery cut the appetite for risk.

The Dow Jones industrial average <.DJI> dropped 93.71 points, or 0.90 percent, to close unofficially at 10,332.60. The Standard & Poor's 500 Index <.SPX> fell 14.90 points, or 1.34 percent, to finish unofficially at 1,094.90. The Nasdaq Composite Index <.IXIC> lost 36.32 points, or 1.66 percent, to close unofficially at 2,156.82.

(Reporting by Rodrigo Campos; Editing by Jan Paschal)