1. The expected rate of return on the market portfolio is 8.50% and the risk–free rate of return is 1.25%. The standard deviation of the market portfolio is 17.50%. What is the representative investor’s average degree of risk aversion?
2. Stock A has a beta of 1.95 and a standard deviation of return of 44%. Stock B has a beta of 3.75 and a standard deviation of return of 65%. Assume that you form a portfolio that is 65% invested in Stock A and 35% invested in Stock B. Using the information in question 1, according to CAPM, what is the expected rate of return on your portfolio?
3. Using the information in questions 1 and 2, what is your best estimate of the correlation between stocks A and B?
4. Your forecasting model projects an expected return of 18.50% for Stock A and an expected return of 34.00% for Stock B. Using the information in questions 1 and 2 and your forecasted expected returns, what is your best estimate of the alpha of your portfolio when using CAPM to determine a fair level of expected return?
5. A different analyst uses a two–factor APT model to evaluate expected returns and risk. The risk premiums on the factor 1 and factor 2 portfolios are 4.75% and 2.15%, respectively, while the risk–free rate of return remains at 1.25%. According to this APT analyst, your portfolio formed in question 2 has a beta on factor 1 of 3.85 and a beta on factor 2 of 3.25. According to APT, what is the expected return on your portfolio if no arbitrage opportunities exist?
6. Now assume that your forecasting model of question 4 accurately projects the expected return of Stocks A and B and therefore your portfolio, and that the APT model of question 5 describes the fair rate of return for your portfolio. Do any arbitrage opportunities exist? If yes, would you invest long or short in your portfolio constructed in question 2?
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