After the shares are sold and the money is invested in its portfolio of securities, trading of the fund's shares can take place. The company is not obligated to redeem its shares or issue more shares. An investor who no longer wants to hold shares in the fund may simply sell them in the market. An open-end mutual fund, by contrast, is constantly offering new shares to the public and redeeming its outstanding shares. There is no limit to the number of shares that can be issued.
Mutual funds are either load or no load.
Other funds do not charge this fee. These are called no-load funds. Both types of funds pay continuing management fees, that differ in amount, to their advisors. Be sure to compare both the load and management fees to determine which will provide a better return over the time you expect to hold the shares. There are no significant differences between load and no-load funds in their operation or success, so it pays to choose for performance, net of charges and fees.