Which of the following are valid criticisms of value at risk:
1. There are many risks that a VaR framework cannot model
2. VaR does not consider liquidity risk
3. VaR does not account for historical market movements
4. VaR does not consider the risk of contagion
Risks such as abrupt changes to a firm's business model caused by legislation, or the introduction of capital controls in foreign countries where a firm in invested, geo-political risks etc are not modelable in the traditional sense. These risks cannot be modeled using VaR. Therefore statement I is correct.
VaR indeed does not consider liquidity risk, it is only concerned with the standard deviation of portfolio returns. Statement II is a valid criticism.
Statement III is not correct, as VaR can consider historical price movements.
Statement IV is correct, as VaR does not consider systemic risk or the risk of contagion.
Veronika
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