Tuesday Sector Leaders: Energy, Materials

The best performing sector as of midday Tuesday is the Energy sector, up 3.5%. Within that group, Williams Cos Inc (NYSE: WMB) and Range Resources Corp (NYSE: RRC) are two of the day's stand-outs, showing a gain of 11.5% and 8.8%, respectively. Among energy ETFs, one ETF following the sector is the Energy Select Sector SPDR ETF (AMEX: XLE), which is up 3.0% on the day, and down 9.30% year-to-date. Williams Cos Inc , meanwhile, is down 20.54% year-to-date, and Range Resources Corp is up 10.12% ye...