2. The agency behavior in securities trading mainly includes two aspects: one is the agency relationship between investors and brokers, the so-called securities brokerage business, and the other is the agency behavior between investors. Brokerage is not an accurate legal concept. Usually, it refers to the behavior of market intermediaries as agents to provide information and services to buyers and sellers and broker transactions. Brokers, as agents, participate in securities trading in the name of clients, and the trading results are borne by the clients, that is, the entrusted investors. After accepting the entrustment, the brokerage company does not participate in securities trading in its own name, does not possess securities and currency, and is not responsible for the trading results based on valid entrustment. Therefore, although brokers also provide trading conditions and information services to investors, the legal relationship between brokers and investors is not a brokerage contract or an intermediary contract, but a principal-agent relationship. Securities brokers are paid commissions, and commissions or handling fees can be understood as the consideration paid by customers for agency costs.