Question
As the number of stocks in a portfolio increases, the
portfolio’s systematic risk:Solution
Systematic risk is risk which affects all and cannot be mitigated or avoided. This is the kind of risk that applies to an entire market or market segment. It is also known as un-diversifiable risk or market risk . As such the portfolio’s systematic risk can be increased by adding higher-risk stocks or decreased by adding lower-risky stocks. When we add more stocks to a portfolio, unsystematic risk (i.e. diversifiable risk) will decrease at a decreasing rate.
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