Wednesday Sector Leaders: Energy, Materials

In afternoon trading on Wednesday, Energy stocks are the best performing sector, up 4.9%. Within that group, Southwestern Energy Company (NYSE: SWN) and Williams Cos Inc (NYSE: WMB) are two of the day's stand-outs, showing a gain of 11.4% and 10.8%, respectively. Among energy ETFs, one ETF following the sector is the Energy Select Sector SPDR ETF (AMEX: XLE), which is up 3.7% on the day, and down 19.41% year-to-date. Southwestern Energy Company, meanwhile, is down 76.00% year-to-date, and Willia...