ID cards can simultaneously open multiple fund accounts in fund companies, banks, securities companies, Alipay and other consignment agencies. It should be noted that investors can only open one fund account in the same institution or bank, and the fund accounts opened by different institutions have different rates when trading funds. Investors should compare their own rates and choose a platform with lower rates, which can save a good cost.

Going to a fund company to open a fund account for subscription, there is no middleman to earn the difference, and the rate is low, which can save investors' transaction costs. However, investors can only buy the products of the fund company where the investor opens an account, and it is more troublesome to buy the products of other fund companies. Generally speaking, if you buy a fund through a third-party platform, the subscription rate will be more favorable, and there will be more funds on consignment. Some funds exist on and off the market, and investors can also buy them through stock accounts or on the market. Investors only need to pay a certain commission fee.