There are generally two situations in which fund managers change people. First of all, the manager's ability to manage the fund is not enough, which leads to the decline of fund income. The second is the resignation of the fund manager. If there is no need to run away in the first case, you can run away in the second case and observe the ability of the new fund manager.

Why don't you run in the first case? Because the first situation represents the current situation of the fund is already very poor. Even if a new manager's ability is worse, there will not be much room for decline. If the fund manager has a good performance and can turn losses into profits, it is the best situation. So there is no need to run in the first case.