3. Create a portfolio using the four stocks and information below: (Do not round
ID: 2811507 • Letter: 3
Question
3. Create a portfolio using the four stocks and information below:
(Do not round intermediate calculations. Record your answers in decimal form and round your answers to 4 decimal places. Ex. x.xxxx)
What is the variance of A?
What is the variance of B?
What is the variance of C?
What is the variance of D?
What is the Correlation (A,A)?
What is the Correlation (B,B)?
What is the Correlation (C,C)?
What is the Correlation (D,D)?
What is the Covariance (A,A)?
What is the Covariance (A,B)?
What is the Covariance (A,C)?
What is the Covariance (A,D)?
What is the Covariance (B,A)?
What is the Covariance (B,B)?
What is the Covariance (B,C)?
What is the Covariance (B,D)?
What is the Covariance (C,A)?
What is the Covariance (C,B)?
What is the Covariance (C,C)?
What is the Covariance (C,D)?
What is the Covariance (D,A)?
What is the Covariance (D,B)?
What is the Covariance (D,C)?
What is the Covariance (D,D)?
What is the expected return on the portfolio above?
What is the variance on the portfolio above?
What is the standard deviation on the portfolio above?
Expected Return Standard Deviation Weight in Portfolio Stock A 26.00% 39.00% 18.00% Stock B 19.00% 20.00% 23.00% Stock C 32.00% 31.00% 14.00% Stock D 29.00% 40.00% 45.00% ---------------------- ---------------------- ---------------------- ---------------------- Correlation (A,B) 0.6100 ---------------------- ---------------------- Correlation (A,C) 0.2500 ---------------------- ---------------------- Correlation (A,D) 0.9000 ---------------------- ---------------------- Correlation (B,C) 0.4500 ---------------------- ---------------------- Correlation (B,D) 0.7300 ---------------------- ---------------------- Correlation (C,D) 1.0000 ---------------------- ----------------------Explanation / Answer
Soln -> Variance = square of standard deviation.
So, i) Variance of A = 0.392 = 0.1521 = 15.21%
Variance of B = 0.202 = 0.04 = 4%
Variance of C = 0.312 = 0.0961 = 9.61%
Variance of D = 0.402 = 0.1600= 16%
=> Correlation on same variable =1
So, Correlation(A,A) = Correlation(B,B) = Correlation(C,C) = Correlation(D,D) = 1.
Now, Covariance(1,2)= s1.s2 * Correlation(1,2)
Also, Covariance(1,1) = s12 * 1 = var(1)
So, Cov(A,A) = 0.1521, Cov(B,B) = 0.04, Cov(C,C) = 0.0961 Cov(D,D) = 0.16
Moreover, Cov(1,2) = Cov(2,1). and Correlation(1,2) = Correlation(2,1)
So, Cov(A,B) = Cov(B,A) = 0.39*0.2*0.61 = 0.04758
Cov(A,C) = Cov(C,A) = 0.39*0.31*0.25 = 0.030225
Cov(A,D) = Cov (D,A) = 0.39*0.4*0.9 = 0.1404
Cov(B,C) = Cov(C,B) = 0.2*0.31*0.45 = 0.0279
Cov(B,D) = Cov(D,B) = 0.2*0.4*0.73 = 0.0584
Cov(C,D) = Cov(D,C) = 0.31*0.4*1 = 0.124
Now, expeected return on portfolio = WA.E(RA) + WB.E(RB) + WC.E(RC) + WD.E(RD)
So, E(RP) = 0.18*26% + 0.23*19% + 0.14*32% + 0.45*29% = 26.58%
Variance of portfolio with 4 assets is possible with excel. Please check the same in excel.