Volume 4 (Investment Business) covers investment firm licensees, i.e. those CBB licensees that solely undertake regulated investment services. It contains prudential requirements (such as rules on minimum capital and risk management); and conduct of business requirements (such as rules on the giving of investment advice and the treatment of client money). Collectively, these requirements are aimed at ensuring the safety and soundness of CBB-licensed investment firms, and providing an appropriate level of protection to the clients of such firms.