us stocks opened down tuesday kicking off the week lower after the 3day holiday weekend celebrating presidents day as investors await fresh economic data the dow jones industrial average djia was down 09 soon after the opening bell while the sp 500 spx fell 09 and the technologyladen nasdaq composite comp dropped 13 according to factset data at last check sp global’s flash purchasing managers’ index data on manufacturing and services in the us will be released tuesday morning followed by fresh data on existing home sales meanwhile the yield on the 10year treasury note tmubmusd10y was up 8 basis points at around 39 factset data show at last check