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PROBLEM 2. (a) (8 Points) After examining years of daily data on hundreds of US equities, you discover the following relationship between the monthly returns
PROBLEM 2. (a) (8 Points) After examining years of daily data on hundreds of US equities, you discover the following relationship between the monthly returns of 3 stocks, S1, S2, and S3: 1 Ri 3 7 R2 + -R3 4 8 200 Find a risk-free portfolio of the three stocks. What should the effective annual risk free rate be? Why? (b) (16 Points) Let R and Rbe the daily return of two equities, and let M1, M2, o and oz be the mean and variance of the returns. If the returns are perfectly correlated, then determine the relationship that governs R and R2. If there are no arbitrage opportunities in the market, determine the risk free rate. Hint: Recall that two random variables R and R2 are perfectly correlated if and only if R1 = ax R2+b, for some constants a + ( and b. Based on the information you have, determine the unknowns a,b. Consider only the cases "a # 1. PROBLEM 2. (a) (8 Points) After examining years of daily data on hundreds of US equities, you discover the following relationship between the monthly returns of 3 stocks, S1, S2, and S3: 1 Ri 3 7 R2 + -R3 4 8 200 Find a risk-free portfolio of the three stocks. What should the effective annual risk free rate be? Why? (b) (16 Points) Let R and Rbe the daily return of two equities, and let M1, M2, o and oz be the mean and variance of the returns. If the returns are perfectly correlated, then determine the relationship that governs R and R2. If there are no arbitrage opportunities in the market, determine the risk free rate. Hint: Recall that two random variables R and R2 are perfectly correlated if and only if R1 = ax R2+b, for some constants a + ( and b. Based on the information you have, determine the unknowns a,b. Consider only the cases "a # 1
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