Wall Street ends flat; Alphabet and Microsoft tumble

Wall Street finished flat on Friday after disappointing quarterly reports from Microsoft and Alphabet slammed tech stocks, while a surge in oil prices lifted energy shares. Microsoft dropped 7.17 percent, contributing the biggest drag to the S&P 500, and Google-parent Alphabet lost 5.41 percent as investors punished both companies for missing profit and revenue estimates. It was Alphabet's worst day since 2012.