Question: In the context of financial advice, what does it mean to act as a fiduciary? In the context of financial advice, what does it mean to act as a fiduciary? It means that any given investment must earn the highest expected return for the client. It means that any recommended investments must be the lowest cost for the client. It means that any recommended investments must be in the best interest of the client. It means that any recommended investments must be suitable for the client.