This fantastic stock has a compelling outlook for the long-term investor. It's easy to see what billionaire hedge fund managers buy and sell every quarter. Although you generally don't get to watch it in real time, hedge funds are required to file a quarterly update with the Securities and Exchange Commission (SEC), and these filings are available to the public. It seems like a good idea to check out what stocks billionaire managers are buying and selling. But is it? John Overdeck and David Seigel from Two ...