Open-end fund. According to the inquiry of the fund Xinghe official website, it can be known that the revision of the fund contract has officially transformed the original fund Xinghe into an open-end fund since the date when the original fund Xinghe terminated its listing. Open-end fund, also known as * * * mutual fund, refers to a fund operation mode in which fund sponsors can sell fund shares or shares to investors at any time according to their needs and redeem the issued fund shares or shares at the request of investors.