Prudent-Person Rule A legal maxim restricting the discretion in a client's account to investments that a prudent person seeking reasonable income and preservation of capital might buy for his or her own portfolio. Also called the Prudent Man Rule. Investopedia Says: This rule is intended to protect investors using the services of an investment advisor from shady, risky, or otherwise poor investments, such as penny stocks. Related Terms: Advisor Blue Chip Stock Broker Fixed Income Government Security Penny Stock Preservation of Capital Treasury Bond |