us stocks opened higher monday with the sp 500 up slightly as major indexes attempt to extend sharp gains booked friday the dow jones industrial average djia was up less than 01 soon after the opening bell while the sp 500 spx rose 02 and the nasdaq composite comp gained 04 according to factset data at last check last week the dow rose 17 the sp 500 gained 19 and the nasdaq advanced 26 according to dow jones market data all three major benchmarks closed sharply higher friday