Thursday Sector Leaders: Energy, Healthcare

The best performing sector as of midday Thursday is the Energy sector, higher by 4.1%. Within that group, Williams Cos Inc (NYSE: WMB) and ConocoPhillips (NYSE: COP) are two large stocks leading the way, showing a gain of 22.3% and 6.7%, respectively. Among energy ETFs, one ETF following the sector is the Energy Select Sector SPDR ETF (AMEX: XLE), which is up 4.4% on the day, and down 7.11% year-to-date. Williams Cos Inc , meanwhile, is down 35.25% year-to-date, and ConocoPhillips, is down 10.86...