1, the stock code represents the different meanings of the stock with numbers. Besides distinguishing various stocks, stock code has its potential significance. For example, 600*** is the stock code listed on the Shanghai Stock Exchange, and 6006** is the earliest listed stock. The stock code of a company is similar to the license plate number, which shows the strength and popularity of this company.

The securities listed on the Shanghai Stock Exchange adopt 6-digit coding method according to the Securities Coding Implementation Plan of the Shanghai Stock Exchange. The first three digits are different securities, as listed in the following table: 001××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××× 201××××× national debt repurchase; 310 ××××× treasury bond futures; 500 ××××××× 550 ××××××× Fund; 600×××A A shares; 700 ××××× rights issue; 710××××× share transfer; 701×××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××× 735 ××××× new fund subscription; 737 ××××× new share placement; 900×××B B shares.

2. The stock trading code of Shanghai Stock Exchange starts with 600, 60 1 or 603, such as Yunsheng Industry: the stock code is 600767. Air China: The stock code is 60111. Liu Ying Stock: The stock code is 603308. The code of B-share trading starts with 900, such as: Yidian B-share: the code is 90090 1.

In the past, the stock code of Shenzhen Stock Exchange was four digits, but it has been upgraded to six digits not long ago. The specific changes are as follows: the Shenzhen stock code is unified from the original four digits to six digits. 1. The upgraded securities code adopts 6-digit coding, and the coding rules are defined as follows: sequential coding area: the third to sixth digits in the 6-digit code, with the value range of 000 1-9999. The upgrading method of A-share securities code conversion between old and new securities is to add "00" before the original code, but there are two special upgrading methods for A-share stocks, namely "0696 ST Lianyi" and "0896 Yuneng Holdings". After upgrading, the stock codes are "00 1696" and "00 1896" respectively. Temporary codes and special symbols in the stock code: the new share subscription code is 730***, the new share subscription code is 740***, and the new share allocation code is 741* * *; The code of IPO is 737***, and the allocation number of IPO (also called "IPO value number") is 747 * * *; The subscription code of convertible bonds is 733 * * *;