The S&P 500 and the Nasdaq closed higher on Monday as shares of chipmaker Nvidia jumped following a bullish note from Morgan Stanley, leading other megacap growth stocks higher as investors awaited earning reports from U.S. retailers. Nvidia's gain pushed the information technology index higher, making it the strongest of 11 S&P 500 sector indexes. Other megacap growth stocks including Alphabet, and Amazon.com also posted gains, as did chipmaker Micron Technology. According to preliminary data, the S&P 500 gained 26.28 points, or 0.59%, to end at 4,490.33 points, while the Nasdaq Composite gained 143.81 points, or 1.05%, to 13,788.66. The...