Portfolio Performance Evaluation Using Value at Risk
Posted: 16 Oct 2006
Developed here is a value at risk-based measure of portfolio performance called the reward-to-VaR ratio. It is demonstrated that, under normality, the reward-to-VaR ratio gives the same ranking for portfolio performance as the frequently used Sharpe ratio. Under non-normality, the reward-to-VaR ratio at one confidence level may give a ranking for portfolio performance different from the ranking obtained at a different confidence level. This indicates that the risk-taking incentives of a portfolio manager in a VaR-based risk management system can be substantially different from the incentives in a Sharpe ratio-based system.
Keywords: Value-at-risk (VaR), portfolio performance
JEL Classification: G11
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