Exxon Mobil (XOM.N) shares dropped 4.58 percent while Chevron (CVX.N) lost 4.89 percent after reporting poor quarterly earnings due to weak oil prices. Despite the S&P’s negative close on Friday, half of the 10 major S&P 500 sectors were higher, with the utilities index’s (.SPLRCU) 0.98 percent rise leading the advancers.