Except Saturday, Sunday and national legal holidays, all are fund trading days. A fund is a collection of funds that people invest in securities, such as stocks and bonds. His advantage is that he can spread risks, avoid the lack of retail funds, and can't spread funds to different securities to achieve the purpose of reducing risks. So the fund trading day is the same as the stock trading day. When the stock market opens, funds can trade on any day. The new fund of open-end fund generally has a three-month closure period, and the day of closure is the fund open day. However, the fund company can also set the fund open day at any time within three months according to the situation, but it must be opened after three months.