A securities broker refers to a securities company that accepts customers' orders to buy and sell securities in a stock exchange, acts as an intermediary between the two parties to the transaction and collects commissions. It can be divided into three categories, namely, commission brokers, two-dollar brokers and bond brokers.
Employees must pass the securities qualification examination before they can engage in securities brokerage business. The duty of a securities broker is to buy and sell securities on behalf of clients and engage in intermediary business. That is to say, in securities trading, most investors do not buy and sell securities directly with each other, but through securities brokers.