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A pension fund manager is considering three mutual funds. The first is a stock fund, the...

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 3.0%. The probability distributions of the risky funds are:

Expected Return Standard Deviation
Stock fund (S) 12% 41%
Bond fund (B) 5% 30%

The correlation between the fund returns is 0.0667. What is the Sharpe ratio of the best feasible CAL? (Do not round intermediate calculations. Round your answer to 4 decimal places.)

Solutions

Expert Solution

Stock Fund=Asset 1,Bond Fund=Asset 2
Return of asset1=R1=12%
Return of asset2=R2=5%
Standard deviation of asset 1=S1=41%
Standard deviation of asset 2=S2=30%
Correlation of asset 1 and 2=Corr(1,2)=0.0667
Covariance(1,2)=Corr(1,2)*S1*S2=0.0667*41*30 82.041
Portfolio Return
w1*R1+w2*R2=w1*12+w2*5 ……..Equation (1)
Portfolio Variance=(w1^2)*(S1^2)+(w2^2)*(S2^2)+2*w1*w2*Cov(1,2)
Portfolio Variance=(w1^2)*(41^2)+(w2^2)*(30^2)+2*w1*w2*82.041
Portfolio Variance=(w1^2)*1681+(w2^2)*900+w1*w2*164.082……………Equation (2)
Portfolio Standard Deviation=Square root of Variance
Sharp ratio=(Portfolio Return-Risk free rate)/(Portfolio Standard Deviation)
Risk Free Rate= 3%
Highest possible Reward to Volatility:
Highest Sharp ratio will give Highest possible Reward to Volatility:
Portfolio Expected   Return 10.25 %
Portfolio Standard Deviation 32.13 %
SharpRatio 0.22561948
w1=0.75, w2=0.25
Best Possible CAL
STOCK FUND 75%
BOND FUND 25%

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