Ordinary RMB stock accounts are A-share accounts. According to the account holder, it can also be divided into natural person securities accounts (Shanghai is the prefix account, and now Shenzhen generally starts with 0), general institutional securities accounts (Shanghai is the prefix account), self-operated securities accounts of securities companies and special securities accounts for securities investment funds of fund management companies (Shanghai is the prefix account).

Can buy and sell all RMB securities of the exchange;

The RMB special stock account is what we generally call a B-share account (Shanghai is a C-prefix account and Shenzhen is a 2-prefix account). B-share accounts can be divided into domestic investors' securities accounts (starting with C90 in Shanghai) and foreign investors' securities accounts (starting with C99 in Shanghai) according to account holders. Can buy and sell B-share securities;

Securities investment fund accounts (starting with F in Shanghai) can only be used to buy and sell listed funds and government bonds.

Securities are all kinds of economic rights and interests certificates, and also refer to specialized products. It is a legal document used to prove that the holder enjoys certain rights.

Mainly including capital security, currency securities and commodity securities. In a narrow sense, securities mainly refer to securities products in the securities market, including property market products such as stocks, debt market products such as bonds, and derivative market products such as stock futures, options and interest rate futures.

The subject system of securities science is an organic system composed of various branches that study the behavior characteristics and operating rules of the securities market from different angles, mainly including two research fields: traditional securities theory and evolutionary securities theory.