And from what I read here, most DUers don't have a clue as to why.
"A hedge fund is a private investment fund charging a performance fee and typically open to only a limited range of qualified investors. In the United States, hedge funds are open to accredited investors only. Because of this restriction, they are usually exempt from any direct regulation by regulatory bodies. Hedge funds are credited to Alfred Winslow Jones for their invention in 1949. <1>
As a hedge fund's investment activities are limited only by the contracts governing the particular fund, it can make greater use of complex investment strategies such as short selling, entering into futures, swaps and other derivative contracts and leverage.
As their name implies, hedge funds often seek to offset potential losses in the principal markets they invest in by hedging via any number of methods. However, the term "hedge fund" has come in modern parlance to be overused and inappropriately applied to any absolute-return fund – many of these so-called "hedge funds" do not actually hedge their investments.
As a result of both legal constraints and self-interests surrounding the release of information to the general public, hedge funds have acquired a reputation for secrecy. Unlike open-to-the-public "retail" funds (e.g., U.S. mutual funds) which market freely to the public, in most countries hedge funds are specifically prohibited from marketing to investors who are not professional investors or individuals with sufficient private wealth. The release of a hedge fund's historical returns to the public, for example, could be construed as marketing.
Since hedge fund assets can run into many billions of dollars and will usually be multiplied by leverage, their sway over markets, whether they succeed or fail, is potentially substantial and there is a continuing debate over whether they should be more thoroughly regulated."
Read more here:
http://en.wikipedia.org/wiki/Hedge_fund