The fund can't be sold in a closed period or a suspended trading period. If the fund is closed, investors can only sell it after the fund is opened. If the fund is a closed-end fund and listed in a securities company, investors can sell it in the market. If the fund is in the suspended trading stage, investors need to wait until the fund returns to normal.

Generally, there will be no unsold funds (except closed-end funds), because selling funds is to redeem shares from fund companies and does not require other investors to take over, so it will not be unsold.