[U.S. Stock Market Opening: Mixed Performance of the Three Major Indexes] The three major U.S. stock indexes showed mixed performance, with the S&P 500 down 0.14%, the Dow Jones up 0.35%, and the Nasdaq down 0.61%. Among major tech stocks, Microsoft rose 1.38%, Tesla fell 1.08%, SpaceX dropped 1.71%, NVIDIA declined 2.04%, and AMD fell 6.01%.