An investment that releases a fixed number of shares in a well managed securities’ portfolio, is known as a closed-end fund. In market, these shares are traded like the stock shares, but as the closed-end funds represent a portfolio of the securities, these are similar to mutual fund. Shares’ market price is ascertained by the supply and demand, not by the net asset value.

The closed-end funds are usually specialized in the investment focus, e.g. a person might focus on a specific geographic region, he make his or her investments in the bonds, stocks, and other securities for gaining diversification, but he is concentrating only a single region, so he is not diversified to whole market.

Dual-purpose closed-end funds are also popular ones, these means that there are two classes of the shareholders, the preferred shareholders those get mainly dividend as income, and the other are common shareholders those gain from the capital appreciation of the share price of the fund.