b4035917_roject__Program__and_Portfolio__Portfolio
[Characteristic] Monitoring [Project] Project manager monitors and controls the project activities (tasks) undertaken to produce the planned products, results, or services of the project. [Program] Program manager monitors the progress of program components, including projects and program-related non-project work, to lead the program to success, which means overall goals and benefits will be achieved within the planned budget and schedule. [Portfolio] 
Portfolio manager manages the aggregated portfolio performance and value indicators.
Become a Certified Project Manager: Chapter 13: Relationship between Project, Program, and Portfolio
Portfolio