All investment banks and stockbrokers must be licensed with Financial Industry Regulatory Authority (FINRA) in order to provide brokerage services. FINRA is the regulator for all investment banks and registered securities representatives; it is a self-regulatory organization, not a government agency. | All investment banks and stockbrokers must be licensed with Financial Industry Regulatory Authority (FINRA) in order to provide brokerage services. FINRA is the regulator for all investment banks and registered securities representatives; it is a self-regulatory organization, not a government agency. |