The so-called securities trading funds are deposited by the third party, and banks transfer securities. Is it the same meaning to transfer securities to banks?

Three-party depository refers to the fund management among customers, securities companies and banks.

Bank-to-securities is to transfer the funds in the bank card to the fund account opened by the securities company, so that you can buy stocks.

Securities-to-bank refers to the transfer of funds from the securities company to the bank account after the securities company sells the securities in the account.