BALTIMORE ( Stockpickr) -- David Einhorn, the billionaire head of Greenlight Capital, may be best known for the stocks he hates. A notorious short seller, Einhorn and his firm are known for conducting in-depth analysis to figure out why a firm is set to fail.In the past, that's generated some impressive returns for the hedge fund - annualized gains well in the double-digits since the fund started in 1996 with less than one million dollars under management. Einhorn's short targets have included conspicuous names like Lehman Brothers, Green Mountain Coffee Roasters ( GMCR), and his highly publicized spat with Allied Capital, a financial firm that the SEC ultimately found guilty of breaking securities laws. More than just shorting stocks he sees as deteriorating, Einhorn takes his case to the rest of the industry, arguing his short theses at major investment conferences like Ira Sohn and the Value Investing Congress. >>5 Stocks Poised for Breakouts But that's exactly why investors should be paying extra attention to the stocks the Einhorn actually likes. Today, we'll do that by peering into his 13F. Institutional investors with more than $100 million in assets are required to file a 13F -- a form that breaks down their stock positions for public consumption. From hedge funds to mutual funds to insurance companies, any professional investors who manage more than that $100 million watermark are required to file a 13F. And with $5.5 billion in long equity alone under management (shorts aren't disclosed in a 13F filing), Greenlight Capital certainly fits that description. >>5 Stocks Bill Ackman Is Betting On Greenlight was especially selective in the most recently filed quarter, only picking up or adding onto a handful of names, and doubling down on the technology sector. So, without further ado, here's a look at five of David Einhorn's favorite stocks.