A pension fund manager is considering three mutual funds. The first is a stock f
ID: 2713906 • Letter: A
Question
A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill money market fund that yields a sure rate of 4.2%. The probability distributions of the risky funds are:
Suppose now that your portfolio must yield an expected return of 11% and be efficient, that is, on the best feasible CAL.
What is the standard deviation of your portfolio? (Do not round intermediate calculations. Round your answer to 2 decimal places.)
What is the proportion invested in the T-bill fund? (Do not round intermediate calculations. Round your answer to 2 decimal places.)
What is the proportion invested in each of the two risky funds? (Do not round intermediate calculations. Round your answers to 2 decimal places.)
A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill money market fund that yields a sure rate of 4.2%. The probability distributions of the risky funds are:
Explanation / Answer
PART -A
E(Rs) = 12%
E(Rb) =5%
Rf =4.2%
Ss = Std.deviation of stcok =33%
Sb = std.deviation of bond = 26%
Covariance (Rs,Rb) = Corr(rs,rb)*Ss*Sb = 0.0308*33*26 = 26.4264
Weight of S = Ws ={ [E(Rs) - Rf]*Sb^2 - [E(Rb) -Rf]*Cov(Rs, Rb)} / { [E(Rs) -Rf]*Sb^2 + [E(Rb) -Rf]*Ss^2 - [E(Rs) -Rf +E(Rb) -Rf]*Cov(Rs,Rb)}
Hence Ws = {(12-4.2)*676 - (5-4.2)*26.4264}/{(12-4.2)*676 + (5-4.2)*1089 -(12-4.2+5-4.2)*26.4264}
Ws = 0.8876
Wd = 1-Ws = 0.1124
Std.deviation of Potfolio Sp is given by
Sp = sqrt[ 0.8876^2*(1089) + 0.1124^2*(676) + 2*0.08876*0.1124*(26.4264)]
Sp = 29.53%
Therefore Standard deviation of portfolio = 29.53%
PART -B
TheSince the expected Return is 11% . Now let the Porportion in the porfolio by "y"
E(Rc) = (1-y)rf +yE(Rp)
E(Rp) = 0.8876 *12 + 0.1124*5 =11.21%
E(Rc) =11
Rf + y(E(Rp) -rf) =11
4.2 +y(11.21-4.2) =11
Hence y = 0.97
Hence 1-y =0.03
Hence Proportion in T bill is 3%
Proportion in Stock fund = 0.8876* 0.97 = 0.86 = 86%
Proportion in Bond fund = 0.1124* 0.97 = 0.11 =11%
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