How to Pay Millions and Lag Behind the Market - NYTimes.com: " . . . Fans of alternative investments argue that they can generate higher returns. But the increased risks, higher fees and lack of transparency associated with such investments make them problematic. A 2007 paper by Fiona Stewart at the Organization for Economic Cooperation and Development in Paris said that “lack of transparency makes the level of risk and type of exposure hard to gauge” in hedge funds. . . ."