Answer to Question #122116 in Finance for lastone

Question #122116
The company has invested $400,000,000 in stocks and $600,000,000 in bonds. Stocks has a standard of 7%, while bonds have 10%. The correlation between stocks and bonds is 0.10. Calculate the portfolio VaR (DEAR) at 99% given mean of 10%.

Calculate the 1-year expected loss of a $100 million portfolio comprising 10 B-rated issuers. Assume that the 1-year probability of default for each issuer is 6% and the average recovery value for each issuer in the event of default is 40%.
Expert's answer

1.Determine the standard deviation of portfolio returns:

according to the formula:

0.4, 0.6 - weight in securities portfolio

0.07, 0.1 -

standard deviation

A confidence level of 99% corresponds to 2.33 standard deviations.

According to the formula, we determine the portfolio VaR:

Portfolio VaR for a given 'confidence level is determined by the following formula:

where VaRP - VaR portfolio;

PP - the value of the portfolio;

sigma p - standard deviation of portfolio returns corresponding to the time for which VaR is calculated;

z a - the number of standard deviations corresponding to the level

confidence probability.


Calculate expected annual loss

Eb - probability of default

E(CE) - expected credit exposure

E(LDG) - expected severity

unexpeted loss:

The loss distribution is a random variable with two states: default (loss of $60M, after recovery), and no default (loss of 0). The expectation is $3.6M. According to the variance formula of the random value

The unexpected loss is therefore

Standard deviation:

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