There are several types of open-end funds: currency, bond, capital preservation and stock. There is no redemption fee for the money fund, and the income is equivalent to six months to one year's deposits, which can be redeemed at any time without loss. The subscription and redemption costs of bond funds are relatively low, and the income is generally greater than that of money funds, but there is also a risk of loss, and the loss will not be great. Stock funds have the highest subscription and redemption costs, and the fund assets are stocks. When the stock market falls, the fund will have the risk of losing money, but when the stock market rises, there will be gains.