Each listed security has its own security code, which corresponds to the code one by one. Once the security code is determined, it will not be changed. This is mainly to facilitate computer identification and use.
Securities listed on the Shanghai Stock Exchange are compiled with 6 digits according to the Securities Coding Implementation Plan of the Shanghai Stock Exchange. The first three are different securities, as shown in the following table: 001×××××××××× 20654410 ×××××120××××× corporate bonds; 129×××100×××××× convertible bonds; 310 ××××× treasury bond futures; 500 ××××××× 550 ××××××× Fund; 600×××A A shares; 700 ××××× rights issue; 710××××× share transfer; 701×××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××× 735 ××××× new fund subscription; 900×××B B shares; 737 ××××× new share placement.
For the securities listed on the Shenzhen Stock Exchange, the securities code of the Shenzhen Stock Exchange shall be followed, and the four-digit compilation method shall be adopted. The first securities variety difference code is shown in the following table: 0×××A A shares; 1××××× corporate bonds, repurchase of government bonds and spot of government bonds; 2 ×××××× B shares and B-share warrants; 3 ×××××× rights issue warrants; 4 ××××× Fund; 5×××××× convertible bonds; 6 ×××××× Treasury bond futures; 7 ××××× options; 8 ×××××× share allotment warrants; 9 ×××××× new share placement