FOF is what we know as a fund. It is a fund that invests in other investment funds. FoF does not directly invest in stocks or bonds, and its investment scope is limited to other funds. Indirectly holding securities assets such as stocks and bonds by holding other securities investment funds. It is a new type of fund that combines fund product innovation and sales channel innovation.

Fund portfolio is a kind of investment object by grasping the opportunity of asset allocation, choosing excellent funds to invest, and adjusting and optimizing the portfolio in time according to market fluctuations. With the help of professional investment institutions and scientific fund analysis and evaluation system, fund portfolio can more effectively find out superior varieties from various funds with uneven returns, help investors avoid risks and maximize returns. In the capital market of developed countries, the fund portfolio has a history of several decades and is a very mature investment method.