It depends on how long it takes for the fund to sell. For example, if it is a low-risk money fund or a pure debt fund, as long as the fund is always positive and the money is not used for a long time, you can always make money and take it out when it is useful.

If it is a particularly risky fund type, such as stock funds, hybrid funds and index funds, then it depends on the fund's upward trend. Because of the particularly risky fund type, it fluctuates greatly and will be held for too long. If the follow-up funds start to fall, there is a possibility of loss.

Therefore, when the fund makes money, it needs to be redeemed in time. The essence of buying a fund is to earn the difference, buy low and sell high, so that you can make money. You can't determine the time you have, mainly depending on your income.