Money funds and bond funds earn income on weekends. Money funds mainly invest in assets such as deposits and bonds, and bear interest every day. So the money fund is profitable on weekends. Bond funds mainly invest in various bonds, and the return of bonds is mainly the change of bond price and bond interest. Bond interest is calculated on a daily basis, and income bond funds also have income on weekends.

Stock funds, hybrid funds, index funds, ETF funds, etc. There is no income on weekends, because they invest in a basket of stocks and don't trade on weekends, so there is no income on weekends.