Question

The following table provides stock return distributions in the coming year for three companies, A, B,...

The following table provides stock return distributions in the coming year for three companies, A, B, and C.

State of Economy Probability of State of Economy Stock A
Rate of Return
Stock B
Rate of Return
Stock C
Rate of Return
Normal 0.65 14.3% 16.7% 18.2%
Recession 0.35 -9.8% 5.4% -26.9%

(a) Consider a portfolio that is invested 40% in Stock A, 30% in Stock B, and the remainder in Stock C. What is the expected return on the portfolio?

(b) What is the standard deviation on the portfolio returns above?

please show your workings.

Homework Answers

Answer #1

Answer

(a)

Expected Return = SUM (Return x Probability)

Return stock A =(0.65*0.143)+(0.35* - 0.098)

=0.058

=5.8%

Return stock B= (0.65*0.167)+(0.35*0.054)

=0.127

=12.7%

Return stock C= (0.65*0.182)+(0.35*0.269)

=0.212

=21.2%

(b) standard deviation   

probability *(Return - Expected return) ^2

standard deviation of stock A = 0.65(0.143-0.058)^2+0.35(0.098-0.058)^2

=0.069

=6.9%

Standard deviation of stock B=  √0.65(0.167-0.127)^2+0.35(0.054-0.127)^2

=0.053

=5.3%

Standard deviation of stock c=√0.65(0.182-0.122)^2+0.35(0.269-0.212)^2

=0.041

4.1%

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