Portfolio. An investment portfolio is a term given to the sum of shares and bonds that an individual possesses. The aim of owning this portfolio is to develop its market value and achieve the optimal employment to represent these assets from funds.
The return on risk can be for any asset-based portfolio. One would think that all possible values should lie within a convex hull. But the bond can be bypassed if you look at the correlation coefficient between the assets. It is said that the combination of inversely related assets can create a portfolio with less risk.