hedge fund(n = noun.group) hedgefund - a flexible investment company for a small number of large investors (usually the minimum investment is $1 million); can use high-risk techniques (not allowed for mutual funds) such as short-selling and heavy leveraging;
a mutual fund or partnership of investors who pool large sums of money to speculate in securities, increasing the risk of such activity by using borrowed money to leverage the investments, or by selling short. [PJC]