Shares of energy companies were broadly higher Monday, as crude oil prices jumped toward a 5 1/2-month high on supply concerns after reports that the U.S. will announce the end of waivers for countries to import Iranian oil. Also giving the sector a boost was better-than-expected first-quarter results from oil services company Halliburton Co. /zigman2/quotes/210488727/composite HAL -2.97% before the open. The SPDR Energy Select Sector ETF /zigman2/quotes/206420077/composite XLE -0.46% rose 0.8%, with 27 of its 30 equity components gaining ground, led by the 1.8% rally in Marathon Oil Corp.'s stock /zigman2/quotes/205031829/composite MRO -6.32% . Halliburton shares gained 0.1%. Among other more active energy ETF (XLE) components, shares of Kinder Morgan Inc. /zigman2/quotes/208455654/composite KMI +0.51% advanced 1.3%, Exxon Mobil Corp. /zigman2/quotes/204455864/composite XOM +0.95% rose 1.4% and Chevron Corp. /zigman2/quotes/205871374/composite CVX +0.91% tacked on 0.7%. Among the few losers, Schlumberger Ltd.'s stock /zigman2/quotes/201012972/composite SLB -1.70% gave up 0.3% and Anadarko Petroleum Corp. shares slipped 0.3%. The XLE has rallied 18.2% year to date while the S&P 500 /zigman2/quotes/210599714/realtime SPX +0.48% has gained 15.8%.