Funds are bought first and then sold out. If you buy the same fund product for several times and make partial redemption, in order to ensure the optimization of redemption fee, most fund companies will adopt the first-in-first-out method. The principle of "first in, first out" means that when you buy the same fund for many times, when you choose to redeem some funds, you will redeem them in the order of buying, that is, the first to buy is the first to redeem.

For example, most funds with different holding periods have different redemption fees, such as 0.5% for 65438+7 days and 0.75% for 7-30 days. If you bought 65438+ million funds in the past 30 days and 65438+ million funds in the last 7 days, you will choose to sell 65438+ million funds today.