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9. Consider three investors A, B, and C and one risky asset. The mean and standard deviation of the risky asset's return is 11 percent and 14 percent. The risk-free borrowing rate is 4 percent and the risk-free saving rate is 3 percent. The objective of the three investors is to maximize E(r) - 0.005202, where (rc) and 6 are the expected return and the variance of an investor's portfolio and = A,B, and ha = 3, 18 = 4.5, Ac = 4 a). (1 points) What is the capital allocation line if an investor is borrowing money to invest in the risky asset? b). (2 point) What is investor A's optimal portfolio weight on the risky asset? c). (2 points) What is investor B's optimal portfolio weight on the risky asset? d). (4 points) What is investor C's optimal portfolio weight on the risky asset? Suppose there is a second risky asset. The mean and the standard deviation of the second risky asset's return are 2 percent and 7 percent. The coefficient of correlation between the two risky assets' returns Lis -1. e) (3 points) Use the two risky assets to construct a portfolio whose return has zero standard deviation. If). (3 points) Is there an arbitrage opportunity after we introduce the second risky asset and why? 9. Consider three investors A, B, and C and one risky asset. The mean and standard deviation of the risky asset's return is 11 percent and 14 percent. The risk-free borrowing rate is 4 percent and the risk-free saving rate is 3 percent. The objective of the three investors is to maximize E(r) - 0.005202, where (rc) and 6 are the expected return and the variance of an investor's portfolio and = A,B, and ha = 3, 18 = 4.5, Ac = 4 a). (1 points) What is the capital allocation line if an investor is borrowing money to invest in the risky asset? b). (2 point) What is investor A's optimal portfolio weight on the risky asset? c). (2 points) What is investor B's optimal portfolio weight on the risky asset? d). (4 points) What is investor C's optimal portfolio weight on the risky asset? Suppose there is a second risky asset. The mean and the standard deviation of the second risky asset's return are 2 percent and 7 percent. The coefficient of correlation between the two risky assets' returns Lis -1. e) (3 points) Use the two risky assets to construct a portfolio whose return has zero standard deviation. If). (3 points) Is there an arbitrage opportunity after we introduce the second risky asset and why

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