TAILIEUCHUNG - Financial Management Theory And Practice, Brigham-11th Ed - Chapter 5

Chapter 5 Risk and Return: Portfolio Theory and Asset Pricing Models a. A portfolio is made up of a group of individual assets held in combination. An asset that would be relatively risky if held in isolation may have little, or even no risk if held in a well-diversified portfolio. | Chapter 5 Risk and Return Portfolio Theory and Asset Pricing Models ANSWERS TO END-OF-CHAPTER QUESTIONS 5-1 a. A portfolio is made up of a group of individual assets held in combination. An asset that would be relatively risky if held in isolation may have little or even no risk if held in a well-diversified portfolio. The feasible or attainable set represents all portfolios that can be constructed from a given set of stocks. This set is only efficient for part of its combinations. An efficient portfolio is that portfolio which provides the highest expected return for any degree of risk. Alternatively the efficient portfolio is that which provides the lowest degree of risk for any expected return. The efficient frontier is the set of efficient portfolios out of the full set of potential portfolios. On a graph the efficient frontier constitutes the boundary line of the set of potential portfolios. b. An indifference curve is the risk return trade-off function for a particular investor and reflects that investor s attitude toward risk. The indifference curve specifies an investor s required rate of return for a given level of risk. The greater the slope of the indifference curve the greater is the investor s risk aversion. The optimal portfolio for an investor is the point at which the efficient set of portfolios--the efficient frontier--is just tangent to the investor s indifference curve. This point marks the highest level of satisfaction an investor can attain given the set of potential portfolios. c. The Capital Asset Pricing Model CAPM is a general equilibrium market model developed to analyze the relationship between risk and required rates of return on assets when they are held in well-diversified portfolios. The SML is part of the CAPM. The Capital Market Line CML specifies the efficient set of portfolios an investor can attain by combining a risk-free asset and the risky market portfolio M. The CML states that the expected return on any efficient portfolio .

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