Today, Motley Fool analyst Rex Moore continues his series that looks at poorly performing stocks and assesses their chances of turning things around. C&J Energy Services (UNKNOWN:CJES.DL) has lost more than a quarter of its value in the past year, but Rex sees strong upside potential for the hydraulic fracturing specialist.

Meanwhile, our analysts have found another under-the-radar energy company that's poised to profit in a big way. To get the name, check out our special free report: "The Only Energy Stock You'll Ever Need." Don't miss out on this limited-time offer and your opportunity to discover this company before the market does. Click here to access your report -- it's totally free.

Rex Moore owns shares of National Oilwell Varco. The Motley Fool owns shares of Halliburton Company and National Oilwell Varco. Motley Fool newsletter services recommend Halliburton Company and National Oilwell Varco. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.