Question

In: Finance

Consider the following information: Rate of Return If State Occurs State of Probability of Economy State...

Consider the following information:
Rate of Return If State Occurs
State of Probability of
Economy State of Economy Stock A Stock B Stock C
        Boom .15     .35     .45     .33    
        Good .50     .12     .10     .17    
        Poor .25     .01     .02     −.05    
        Bust .10     −.11     −.25     −.09    
Requirement 1:

Your portfolio is invested 30 percent each in A and C and 40 percent in B. What is the expected return of the portfolio? (Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places (e.g., 32.16).)

  Expected return of the portfolio %
Requirement 2:
(a)

What is the variance of this portfolio? (Do not round intermediate calculations. Round your answer to 5 decimal places(e.g., 32.16161).)

  Variance of the portfolio      
(b)

What is the standard deviation of this portfolio? (Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places (e.g., 32.16).)

  Standard deviation %  

Solutions

Expert Solution

Stock A
Scenario Probability Return% =rate of return% * probability Actual return -expected return(A)% (A)^2* probability
Boom 0.15 35 5.25 24.6 0.0090774
Good 0.5 12 6 1.6 0.000128
Poor 0.25 1 0.25 -9.4 0.002209
Bust 0.1 -11 -1.1 -21.4 0.0045796
Expected return %= sum of weighted return = 10.4 Sum=Variance Stock A= 0.01599
Standard deviation of Stock A% =(Variance)^(1/2) 12.65
Stock B
Scenario Probability Return% =rate of return% * probability Actual return -expected return(A)% (B)^2* probability
Boom 0.15 45 6.75 33 0.016335
Good 0.5 10 5 -2 0.0002
Poor 0.25 2 0.5 -10 0.0025
Bust 0.1 -2.5 -0.25 -14.5 0.0021025
Expected return %= sum of weighted return = 12 Sum=Variance Stock B= 0.02114
Standard deviation of Stock B% =(Variance)^(1/2) 14.54
Asset C
Scenario Probability Return% =rate of return% * probability Actual return -expected return(A)% (C)^2* probability
Boom 0.15 33 4.95 21.7 0.00706335
Good 0.5 17 8.5 5.7 0.0016245
Poor 0.25 -5 -1.25 -16.3 0.00664225
Bust 0.1 -9 -0.9 -20.3 0.0041209
Expected return %= sum of weighted return = 11.3 Sum=Variance Asset C= 0.01945
Standard deviation of Asset C% =(Variance)^(1/2) 13.95
Covariance Stock A Stock B:
Scenario Probability Actual return% -expected return% for A(A) Actual return% -expected return% For B(B) (A)*(B)*probability
Boom 0.15 24.6000 33 0.012177
Good 0.5 1.6 -2 -0.00016
Poor 0.25 -9.40 -10 0.00235
Bust 0.1 -2140.00% -14.5 0.003103
Covariance=sum= 0.01747
Correlation A&B= Covariance/(std devA*std devB)= 0.950139884
Covariance Stock A Asset C:
Scenario Probability Actual return% -expected return% for A(A) Actual return% -expected return% for C(C) (A)*(C)*probability
Boom 0.15 24.6 21.7 0.0080073
Good 0.5 1.6 5.7 0.000456
Poor 0.25 -940.00% -16.3 0.0038305
Bust 0.1 -21.4 -20.3 0.0043442
Covariance=sum= 0.016638
Correlation A&C= Covariance/(std devA*std devC)= 0.94330385
Covariance Stock B Asset C:
Scenario Probability Actual return% -expected return% For B(B) Actual return% -expected return% for C(C) (B)*(C)*probability
Boom 0.15 33 21.7 0.0107415
Good 0.5 -2 5.7 -0.00057
Poor 0.25 -10 -16.3 0.004075
Bust 0.1 -14.5 -20.3 0.0029435
Covariance=sum= 0.01719
Correlation B&C= Covariance/(std devB*std devC)= 0.847770108
1)Expected return%= Wt Stock A*Return Stock A+Wt Stock B*Return Stock B+Wt Asset C*Return Asset C
Expected return%= 0.3*10.4+0.4*12+0.3*11.3
Expected return%= 11.31
2 a)Variance =w2A*σ2(RA) + w2B*σ2(RB) + w2C*σ2(RC)+ 2*(wA)*(wB)*Cor(RA, RB)*σ(RA)*σ(RB) + 2*(wA)*(wC)*Cor(RA, RC)*σ(RA)*σ(RC) + 2*(wC)*(wB)*Cor(RC, RB)*σ(RC)*σ(RB)
Variance =0.3^2*0.12647^2+0.4^2*0.14539^2+0.3^2*0.13947^2+2*(0.3*0.4*0.12647*0.14539*0.95014+0.4*0.3*0.14539*0.13947*0.84777+0.3*0.3*0.9433*0.12647*0.13947)
Variance 0.01789
2 b) Standard deviation= (variance)^0.5
Standard deviation= 13.37%

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