Generally, open-end funds can be sold in banks, but not in the secondary market. You can buy all open-end funds by opening an account in a securities company. However, except LOF and ETF, other open-end funds can be bought and sold as stocks, or traded in the primary market.

Stock is a part of the ownership of a joint-stock company and a certificate of ownership issued by a joint-stock company. It is a kind of securities issued by a joint-stock company to all kinds of shareholders, as a shareholding certificate to obtain dividends and bonuses.