Question

In: Finance

The following information is available for three mutual funds: Mutual r Fund E(r) s A B...

The following information is available for three mutual funds:

Mutual

r

Fund

E(r)

s

A

B

C

A

9.20%

29.00%

1

0.61

0.64

B

7.00%

27.00%

1

0.56

C

11.00%

40.00%

1

(a) Calculate the weights of a portfolio of mutual funds B and C that has the same expected return

as mutual fund A.

(b) Does the portfolio of B and C dominate mutual fund A? Perform the necessary calculations to

answer the question.

Solutions

Expert Solution

(a) We need to calculate the weights of mutual fund B and C in a portfolio that has the same expected return as A.

Weight of Mutual fund B in the portfolio = WB

Weight of Mutual fund C in the portfolio = WC = 1- WB

Expected return of portfolio = E[Rp] = WB*E(RB) + WC* E(RC)

WB*E(RB) + WC* E(RC) = E[RA]

WB*7% + (1- WB)* 11% = 9.20%

11%-4%* WB = 9.20%

WB = (11%-9.2%)/4% = 0.45

Therefore, WC = 1-0.45 = 0.55

WB = 45%, WC = 55%

(b) σB = 27%, σC = 40%, r(B,C) = 0.56 [r is the correlation between B and C]

Variance of the portfolio is calculated using the below formula:

σ2p = WB2* σ2B + WC2* σ2C + 2 WB*WC *r* σB * σC

σ2p = 0.452* (27%)2 + 0.552* (40%)2 + 2*0.45*0.55*0.56* (27%) * (40%)

σ2p = 0.01476225+ 0.0484+ 0.0299376 = 0.09309985

Therefore, Standard deviation of the portfolio of B and C = σp = (0.09309985)1/2 = 0.305122680245176 = 30.512%

Standard deviation of mutual fund A = σA = 29%

σp > σA, Hence, we can say that the portfolio of B and C does not dominate mutual fund A.


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