Funds can be purchased at a designated agency, such as a securities company or bank. There is no maximum and minimum. Unless, of course, you are tens of billions. Generally speaking, funds are in circulation. If the fund issues 65.438+0 billion yuan, but there are 20 billion funds to subscribe for the fund, and you pay 65.438+0 billion yuan, then only 654.38+0 yuan in 2 yuan can buy the fund, and you have 5,000 copies, and the remaining 5,000 yuan will be returned to you. That's it.