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.

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According to the capital asset pricing model, investors are concerned with the risk of a well-diversified portfolio, not the risks of individual stocks held in isolation. Therefore, the relevant risk of a stock is the stock's contribution to the riskiness of a well-diversified portfolio.

According to the Capital Asset Pricing Model,investors Are Primarily Concerned