U.S. stocks fell on Thursday as data showed the services sector shrank unexpectedly in November, while financials led a late sell-off that dragged the major indexes to session lows just minutes before the close.

The Dow Jones industrial average <.DJI> dropped 86.53 points, or 0.83 percent, to close unofficially at 10,366.15. The Standard & Poor's 500 Index <.SPX> lost 9.32 points, or 0.84 percent, to end unofficially at 1,099.92. The Nasdaq Composite Index <.IXIC> fell 11.89 points, or 0.54 percent, to finish unofficially at 2,173.14.

(Reporting by Rodrigo Campos; Editing by Jan Paschal)