[U.S. Stock Market's Three Major Indexes Open Slightly Lower] The three major U.S. stock indexes opened slightly lower, with the Dow Jones Industrial Average down 0.11%, the S&P 500 Index down 0.01%, and the Nasdaq Composite Index down 0.02%. Nike opened up more than 3%, boosted by an increased stake from Apple's Tim Cook. Intel opened down 3% amid reports that NVIDIA has decided to pause testing of Intel's 18A process technology.