Portfolio preventive (in English : hedge Fund) - and also claims the hedge fund - is an investment fund that uses policies and tools to make sophisticated investment returns exceed the average market return or profit a certain standard without the same level of risk . Of the tools used by the governor is the preventive financial derivatives , futures , swaps , and the examples of the investment policies used are leverage and short-selling .

Although the name of this type of fund suggests that it is aimed towards reducing the risks , but the reality is that it is aimed towards achieving the maximum profit possible , and the name is not only a historical impact has touch with reality . The philosophy of the fund to ensure a profit for the investor , regardless of what might happen in the vagaries of world markets . And there are no restrictions on the fund manager of the regulators and those of the strong points that are taken out . The number of these funds the idea that appeared in the Wall Street in the forties of the last century, eight thousand fund scouring the various markets of the world.