Growth Enterprise Market (GEM) is the second-board market in China stock market. It is different from the main board market because its threshold is very low. So now it is mainly aimed at some medium-sized enterprises and small enterprises that have just solved the entrepreneurial problem. These enterprises are in the initial stage and need the integration of funds. Therefore, GEM provides a good platform and a good opportunity for these enterprises to carry out financing and development. Moreover, the listing requirements of GEM are quite low.

Index fund refers to the fund that tracks the growth enterprise market index. For example, funds like 1599 15 belong to index funds.