Among the largest underlying components of IEO, in trading today Occidental Petroleum Corporation ( OXY) is down about 1.1%, and Apache Corporation ( APA) is lower by about 0.3%.

FORBES: Has the Well Dried For Oil & Gas ETFs?

Among the largest underlying components of XLE, in trading today Exxon Mobil Corporation ( XOM) is up about 1.07%, and Occidental Petroleum Corporation ( OXY) is up by about 1.68%.

FORBES: Powering Into Energy Sector

Among the largest underlying components of XLE, in trading today Occidental Petroleum Corporation ( NYSE: OXY) is down about 1%, Halliburton Company ( NYSE: HAL) is off about 0.4%, and Apache Corporation ( NYSE: APA) is lower by about 0.3%.

FORBES: Energy Shares Slide As Investors Look For Safer Growth Options