A "riskier portfolio" refers to a collection of investments that have a higher probability of experiencing losses or being more volatile compared to a safer or less risky portfolio. Full definition
The more stocks you add to your portfolio, the less risky the portfolio is. (oakmark.com)
Further, the older you become (and therefore the shorter your investment horizon), the more risky a portfolio that is top - heavy in a single stock becomes. (aaii.com)
Is it the returns as a gauge of how risky a portfolio is or should we be looking at the holdings? (valuewalk.com)