You can buy and sell the same fund many times. There is no limit to the number of times the same fund can be bought and sold, allowing investors to buy and sell multiple times in one day. However, investors are not advised to do so, because the transaction cost of funds is not low, and frequent operations are not worth the loss.

The redemption rate of the fund is related to the holding time. The longer the holding time, the lower the redemption rate. Therefore, if investors buy and sell frequently, the subscription fee and redemption fee will cost a lot of money, so it is difficult to make money.