The code of GEM stocks starts with 300, and we can also see some stocks with letters, such as XR, XD, *ST and so on. Growth enterprise market index, also known as "weighted average index", is based on the starting date, according to the circulating market value of all the shares on the growth enterprise market, to calculate the stock price of that day one by one, and then compare it with the "benchmark" on the opening day. In order to reflect the situation of the Growth Enterprise Market more comprehensively, provide investors with more tradable index products and the subject matter of financial derivatives, promote index fund products and enrich the product varieties in the securities market, Shenzhen Stock Exchange officially compiled and published the Growth Enterprise Market Index on June 20 10/day. The compilation of this index refers to the compilation methods of Shenzhen Component Index and Shenzhen 100 Index and international practices (including total income index and pure price index). At this point, the GEM index, Shenzhen Stock Exchange Index and Small and Medium Board Index * * * together constitute the core index reflecting the operation of listed stocks in Shenzhen Stock Exchange. The benchmark date of GEM index is May 3 1, 20 10, and the base point is 1000. The index code is 399006, and the name of the index is GEM Index P, referred to as GEM. Growth enterprise market refers to the stock exchange market outside the main board, which provides financing channels and growth space for small and medium-sized enterprises and emerging companies that are temporarily unable to go public. It is an effective supplement to the main board market and occupies an important position in the capital market. Growth enterprise market is characterized by low entry threshold and strict operation, which helps potential small and medium-sized enterprises to obtain financing opportunities. The financial indicators in the issuance conditions of GEM are lower than those in the initial public offering conditions of the main board (including small and medium-sized board) in quantity. In terms of indicators, we refer to the practice of the main board, mainly select financial indicators such as net profit, main business income and distributable profit, and attach growth rate and net assets indicators. In addition, GEM has set two sets of standards for net profit/operating income, and the issuer can meet one of them. The delisting system of GEM is stricter: the financial accounting report of the last year shows that the unaudited net assets at the end of that year are negative, so it will be terminated. Growth enterprise market stocks have better growth and greater risks. To invest in GEM stocks, investors need to have certain experience and risk expectations, and sign relevant risk agreements.