Shares of energy companies took a broad beating Monday, as crude oil futures sank toward seven-month lows amid demand concerns as China's economy slows. The SPDR Energy Select Sector ETF /zigman2/quotes/206420077/composite XLE -1.81% dropped 4.2% in morning trading, with all 21 equity components losing ground, after closing Friday at a two-month high. The component losses ranged from Kinder Morgan Inc.'s /zigman2/quotes/208455654/composite KMI -1.29% 2.6% decline to Halliburton Co.'s /zigman2/quotes/210488727/composite HAL -4.50% 5.6% fall. Elsewhere, shares of Chevron Corp. /zigman2/quotes/205871374/composite CVX -2.57% slid 3.6% to pace the Dow Jones Industrial Average's /zigman2/quotes/210598065/realtime DJIA -0.27% decliners. Among the other more-active components, shares of Exxon Mobil Corp. /zigman2/quotes/204455864/composite XOM -0.58% shed 4.2%, Occidental Petroleum Corp. /zigman2/quotes/207018272/composite OXY -1.09% slumped 4.5%, Devon Energy Corp. /zigman2/quotes/209479244/composite DVN -3.17% gave up 5.1% and Marathon Oil Corp. /zigman2/quotes/205031829/composite MRO -1.47% declined 5.4%. Meanwhile, continuous crude oil futures /zigman2/quotes/209723049/delayed CL00 +0.25% were down 5.3% toward the lowest settlement since Jan. 28, and the S&P 500 /zigman2/quotes/210599714/realtime SPX -0.09% lost 0.4%.