Monday Sector Leaders: Energy, Financial

The best performing sector as of midday Monday is the Energy sector, up 1.4%. Within that group, Williams Cos Inc (NYSE: WMB) and ONEOK Inc. (NYSE: OKE) are two of the day's stand-outs, showing a gain of 23.3% and 4.5%, respectively. Among energy ETFs, one ETF following the sector is the Energy Select Sector SPDR ETF (AMEX: XLE), which is up 1.2% on the day, and down 1.69% year-to-date. Williams Cos Inc , meanwhile, is up 35.21% year-to-date, and ONEOK Inc., is down 15.61% year-to-date. Combined...