Most of us think of artists, designers, and financial traders as having portfolios to market their talents.
The word portfolio comes from a Latin word port meaning to move. The second syllable, folio, means paper or artifacts. Thus a portfolio is a moveable collection of papers and/or artifacts or samples.
Because people often move through several different careers, it makes sense for students and potential job seekers to compile and display work skills.
A portfolio is a collection in progress: which contains things related to training, work experience, contributions and special accomplishments. It helps to provide insight into life/work history, and is useful in planning for the future or gaining insights from past experiences.
You may choose to develop a portfolio or take the Portfolio Development course.
Source: Kimeldorf, Martin(1997). Portfolio Power, Peterson's. Princeton, New Jersey.