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principles of corporate finance chapter 7 question 17: What is the portfolio variance The table below...

principles of corporate finance chapter 7 question 17:

What is the portfolio variance

The table below shows standard deviations and correlation coefficients for eight stocks from different countries. Calculate the variance of a portfolio with equal investments in each stock. (Use decimals, not percents, in your calculations. Do not round intermediate calculations. Round your answer to 5 decimal places.)

BHP BP Fiat
Chrysler
Heineken Korea
Electric
Nestlè Sony Tata Motors
BHP 1.00 .27 .36 .40 .15 .40 .14 .36
BP .27 1.00 .36 .15 .14 .35 .46 .19
Fiat .36 .36 1.00 .12 .13 .05 .39 .10
Heineken .40 .15 .12 1.00 .22 .49 .32 .31
Korea Electric .15 .14 .13 .22 1.00 −.29 .29 .08
Nestlè .40 .35 .05 .49 −.29 1.00 .30 .03
Sony .14 .46 .39 .32 .29 .30 1.00 .14
Tata Motors .36 .19 .10 .31 .08 .03 .14 1.00
Standard deviation (%) 24.80 34.10 48.06 23.04 32.83 14.70 49.84 44.11

Portfolio variance   

Solutions

Expert Solution

Given information is shown below:

The covariance matrix is calculated in the following manner from the correlation matrix:

Since the portfolio is equally weighted, hence, the weights are calculated as: 1/Nuumber of stocks

= 1/8 = 0.125

The 2-stocks portfolio variance is calculated as:

In the similar manner, the 8-stock portfolio variance is calculated below:


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