Oil, Apple push Wall Street higher

Apple shares rose 1.6 percent to $91.96 after Warren Buffett's Berkshire Hathaway reported a stake worth about $1 billion in the iPhone maker. Oil jumped over 3 percent to its highest since November 2015 on growing Nigerian output disruptions and after Goldman Sachs said the market had ended almost two years of oversupply and flipped to a deficit. U.S. stocks fell on Friday as gloomy quarterly reports from retailers overshadowed upbeat April retail sales data, leaving the Dow and the S&P 500