What you buy in stocks are closed-end funds. In the listed part of hierarchical funds, you can buy open-end funds in the fund, just like buying them over the counter. However, the handling fees for buying open-end funds in this way are generally cheaper than buying funds through other channels. To find out how much it is cheaper, you need to consult the brokerage firm where you opened the account.

In addition, the handling fee can be negotiated. If you have a large amount of funds, you can ask the brokerage to reduce the handling fee for you.