If you want to take a bit more risk in the energy sector but you still want to buy a market leader, I would suggest considering shares of Double Eagle Petroleum ( DBLE). This company is an independent energy firm engaged in the exploration, development, production and sale of natural gas and crude oil, primarily in the Rocky Mountain Basins of the western U.S. The stock is one of the best performers in 2011 with shares already up around 92%. I have a sneaking suspicion that this stock has become a popular play for traders who want to play the oil and gas sector without taking much risk abroad in areas that aren't displaying a lot of stability at the moment. Market players might want to wait for a meaningful pullback towards some previous support at around $8.50 to $7.50 a share before you consider adding this stock to your portfolio. If the stock can hold at those levels and find some buying interest, then another uptrend in price could be setting up to begin again. I say again because the stock has recently sold off pretty sharply from $11.50 to its current price at around $9.50 a share. Robert Bruce's Bruce & Co. maintained a 156,919-share stake in Double Eagle in the most-recent quarter; the stock comprises 0.6% of Bruce's total portfolio. If you think the chip sector is going to be the place to be in 2011, then I would suggest taking a look at three of the market leaders in that space, which are Nvidia ( NVDA), Silicon Motion Technology ( SIMO) and Micron Technology ( MU). Shares of graphic chip maker Nvidia are up around 50%, and shares of multimedia chip maker Silicon Motion are up 92%, while shares of memory chip maker Micron are up around 45%. The catalyst here is pretty simple to understand for these names, and that's the trend towards mobile applications. As long as the market for mobile wireless devices continues to grow then these stocks are going to benefit since their chips are needed to give consumers the mobile application experience that they desire. David Tepper's Appaloosa Management scooped up 17.76 million shares of Micron in the most-recent quarter, one of 11 new positions Tepper initiated in the period. The stock, already one of Tepper's top 10 holdings, comprises 2.9% of the total portfolio. To see more of the best performing stocks in 2011, like Netflix (NFLX), Datalink (DTLK) and Sunrise Senior Living (SRZ), check out the Market Leading Stocks Of 2011 portfolio on Stockpickr. -- Written by Roberto Pedone in Winderemere, Fla.