I suddenly received a short message from the industry and commerce saying that I bought a fund, but I didn't buy it.

I don't know what happened at all, which means you didn't buy it at all. It is very likely that someone else bought it, and the contact number left by registration is yours, so there is a SMS reminder. Ask your husband, wife, children or parents if they bought it first. Lazy people can ignore this news, because it's someone else's money anyway. If you are diligent, please go to XX Fund official website and log in with your ID card. The initial password is the last six digits of your ID card. If you can log in, it means that your ID card has opened a fund account, and then see if there is any fund in your account. If yes, check the reason. If you can't get in, it means that you didn't buy a fund, or someone else registered and left the wrong contact number, or the bank or fund company entered the wrong contact number. You don't have to worry anyway. No, there won't be. If there is, it is your own, because the fund account is bound to the ID card.

There is also a possibility.

SMS is a scam message.