What are A-shares, Small and Medium-sized Board and Growth Enterprise Market?

Growth enterprise market, also known as the second board market, namely the second stock exchange market, refers to the securities trading market outside the main board, providing 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 the stock code starts with 300. Most companies listed on GEM are engaged in high-tech business with high growth, but they are often established for a short time, with small scale and outstanding performance. The risk of GEM market is much higher than that of main board market. Of course, the rewards may be much greater. The supervision of the second board market is stricter. Its core is "information disclosure".