A fund manager is considering three mutual funds. The 1st is a stock fund, the 2nd is a long-term government and corporate bond fund (investment grade), and the third is a T-bill money market fund that yields a sure rate of 3.00%. The probability distributions of the risky funds are:
Expected Return Standard Deviation
Stock fund (S) 12.00% 41.00%
Bond fund (B) 5.00% 30.00%
The correlation between the fund returns is 0.0667.
What is the expected return and standard deviation for the minimum-variance portfolio of the two risky funds?
A. |
Expected return is: 7.37% and the Standard deviation is: 24.96% |
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B. |
Expected return is: 5.08% and the Standard deviation is: 24.96% |
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C. |
Expected return is: 7.37% and the Standard deviation is: 28.13% |
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D. |
Expected return is: 5.08% and the Standard deviation is: 28.13% |
Correlation between fund S&B=0,0667
Standard Deviation of Fund S=41%
Standard Deviation of Fund(B)=30%
E(R) of Stock Fund S=12%
E(R) of Stock Fund B=5%
Covariance between the funds=Standard Deviation of Fund(B)XStandard Deviation of Fund SXcorrelation between these funds
Cov=.41*.30*.0667=0.008204
Now minimum variance portfolio is found by applying:
Wmin(S)=(SDB)^2-Cov(B,S)/((SDS)^2+(SDB)^2-2Cov(B,S)
Wmin(S)=0.338431
Wmin(B)=1-0.338431=0.661569
1) E(r)min=0.338431*12%+0.661569*5%=7.37%
2) Standard Deviation:
SD Min=(Ws^2XSDs^2+Wb^2XSDb^2+2XWsWb*Cov(s,B)^1/2
SDmin=(0.338431^2X.41^2+0.661569^2X0.3^2+2X0.338431X0.661569X0.008204)^1/2
SDmin=24.96%
Hence option 1 is correct
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