Only have private equity investment fund investors, can successfully raised a fund. Investors are mainly institutional investors, and there is a small number of wealthy individuals, usually have high threshold of investors. , public pension funds and corporate pension funds in the United States is the largest private equity fund investors, the investment of 30% ~ 30% of total amount of the funds. Institutional investors tend to fund management company promises certain quotas, but money is not in place at a time, instead of partial injection.