[U.S. Stock Market's Three Major Indexes Open Lower, Dow Drops 0.4%] According to Golden Finance, the three major U.S. stock indexes opened lower, with the Nasdaq down 0.26%, the Dow down 0.42%, and the S&P 500 down 0.32%. Tech stocks broadly declined, with Amazon down 0.6%. Oil stocks rose, with ExxonMobil up 0.6%.