There is no need to understand the last three digits of the code, because it is a number that distinguishes individual stocks and has little meaning, and the first three digits are the key. Just as there are Beijing A, Beijing B, Shanghai A, and Shanghai B on the front of the license plate, this information can tell the province, city, and region where a car is located. The numbers at the back are just to distinguish each vehicle.
There are currently two major exchanges for A-shares, one is the Shanghai Stock Exchange and the other is the Shenzhen Stock Exchange. Let's take the Shanghai Stock Exchange as an example: the first number of the stock code starts with 6, which means that the stock's listing area is on the Shanghai Stock Exchange.
Among them, if the first three digits of the code are 600, 601, 603, 605. It shows that these stocks belong to the constituent stocks of the Shanghai Stock Exchange. As the number of stocks continues to increase in the future, there may be new combinations. However, the constituent stocks in the Shanghai Stock Exchange so far are all 600, 601, 603, and 605.
If the first three digits of the code start with 688, it means that the stock is a component of the Sci-tech Innovation Board. Since the Sci-Tech Innovation Board has just been established, there is only one combination of 688. So seeing the stocks starting with 688 shows that it is a stock on the Science and Technology Innovation Board.
After talking about Shanghai, let's talk about the code of Shenzhen Stock Exchange. The first digit of the code starts with 0 or 3, indicating that these stocks are listed in the Shenzhen Stock Exchange. If the first three digits of the code start with 000, it means that the stock is a constituent stock of the Shenzhen Component Index. If the first three digits of the code start with 002, It shows that the stock is a constituent stock of the small and medium board index. If it starts with 300, it means that the stock is a constituent stock of the GEM.
Finally, to summarize: the stock code has 6 digits, and the first number represents whether the stock is listed in Shanghai or Shenzhen. The combination of the first three digits of the code represents the index in which the stock is located, and the last three digits of the code are the identity of each company.
like