Although it is possible (or possible) for other institutions or individuals to trade stocks on behalf of customers (without professional qualifications), this kind of contract is not a standardized trust contract or entrustment contract stipulated in China's contract law. Therefore, although it cannot be said that this kind of private financial management is a serious illegal act, at present, in our country, this practice is at least not protected by law.
If both parties or one party suffers investment losses, it will be difficult to safeguard their legitimate rights and interests through legal channels. Personally, I feel that your personal financial management on behalf of customers has caused a floating loss in customer accounts, and it depends on your original agreement. If there is a clear agreement (all or part of the loss will be borne by you), then you must make up for the losses caused by it; If there is no written or oral agreement in advance, the loss shall be borne by the other party.