[U.S. Stock Market Closing Review: Major U.S. Stock Indexes Close Mixed] The three major U.S. stock indexes closed mixed, with the Dow down 0.13%, the Nasdaq up 0.2%, and the S&P 500 up 0.12%. The Nasdaq and S&P 500 set new closing highs again. Most popular tech stocks closed higher, with NVIDIA up 4% to a record high and Google up over 1%.