stockbroker

One that acts as an agent in the buying and selling of stocks or other securities; a broker.

A broker who, for a commission, attends to the purchase and sale of stocks or shares, and of government and other securities, in behalf and for the account of clients.

A broker who deals in stocks.

A person who buys and sells shares (stock) on a stock exchange on behalf of clients. May also provide investment advice and/or company information, depending on the level of service offered (or chosen by the client).

an agent in the buying and selling of stocks and bonds