US STOCKS-S&P 500's best month since 2015 ends on a high note By: Reuters: Company News January 31, 2019 at 16:51 PM EST * Dow down 0.06 pct, S&P 500 up 0.86 pct, Nasdaq jumps 1.37 pct (Adds closing prices, financial details) Read More >> Related Stocks: Alphabet-A Amazon.com Charter Communications Inc Dowdupont Inc Facebook General Electric Intel Corp Microsoft