An Individual Stock's Diversifiable Risk,which Is Measured by Its Beta,can

One key conclusion of the Capital Asset Pricing Model is that the value of an asset should be measured by considering both the risk and the expected return of the asset,assuming that the asset is held in a well-diversified portfolio.The risk of the asset held in isolation is not relevant under the CAPM.

According to the Capital Asset Pricing Model,investors are primarily concerned with portfolio risk,not the risks of individual stocks held in isolation.Thus,the relevant risk of a stock is the stock's contribution to the riskiness of a well-diversified portfolio.