A premarket look at the top 10 holdings of the XLE:
Exxon Mobile (NYSE:XOM) -4.1%, Chevron (NYSE:CVX) -4.1%, Schlumberger (NYSE:SLB) -4.6%, ConocoPhillips (NYSE:COP) -4.4%, EOG Resources (NYSE:EOG) -4.3%, Pioneer Natural Resources (NYSE:PXD) -4.8%, Occidental Petroleum (NYSE:OXY) -4.3%, Haliburton (NYSE:HAL) -4.7%, Anadarko Petroleum (NYSE:APC) -5%, The Williams Companies (NYSE:WMB) -1.6%.