The Energy Select Sector SPDR (XLE) is one of the biggest, and one of the most beaten-up, ETFs in the energy space. The fund includes hefty energy concerns such as Exxon Mobil (XOM), Chevron (CVX) and Schlumberger (SLB). Over the past three months, XLE is down nearly 14% (through June 12), as investors have dumped the sector for fear of a European-induced slowdown. The upside here is that stocks in the sector now trade at about 10 times earnings. This is extremely cheap, especially when you realize you’re buying some of the most profitable companies ever. Owning XLE also delivers a solid yield of 1.7%, which while not huge, still makes this fund attractive for income investors.