We know that hedge funds generate strong, risk-adjusted returns over the long run, which is why imitating the picks that they are collectively bullish on can be a profitable strategy for retail investors. With billions of dollars in assets, professional investors have to conduct complex analyses, spend many resources and use tools that are not always available for the general crowd. This doesn't mean that they don't have occasional colossal losses; they do. However, it is still a good idea to keep an eye on hedge fund activity.