Some of the Biggest Challenges Hedge Fund Investors Face MassPRIM's Eric Nierenberg and other investors share what they find challenging about investing in hedge funds. At the top of his list: Complacency. Related Articles Premium Biopharma Funds Deliver Rare Monthly Gains Stephen Taub Icahn’s Private Hedge Fund Remains Deep in the Red After Six Straight Years of Losses Stephen Taub Energy-Hungry India Offers Opportunities for U.S. Oil, Natural Gas Exports Sponsored by CME Group