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Consider a 1 m portfolio consisting of 6 0 % invested in asset A and 4 0 % invested in asset B . Daily volatility

Consider a 1m portfolio consisting of 60% invested in asset A and 40% invested in asset B. Daily volatility of asset A returns is 0.09, while daily volatility of asset B returns is 0.05.
1.1) What is Value at Risk (VaR)? Under which assumptions can one compute VaR from the above data? If the standard normal deviate factor is 1.645 at the 95% level, what are individual 1-day VaRs at 95% confidence on each asset in this portfolio? Would you expect the portfolio's VaR to be greater or smaller than the sum of these two assets' VaRs? Explain your answer.
(15%)
1.2) Comment on the following statement: "VaR is not a subadditive risk measure, therefore it is not appropriate to use it in risk measurement".
(15%)
1.3) Define conditional value at risk (CVaR). Can assets A and B above have identical CVaRs? Illustrate your answer with a relevant diagram.
(20%)
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