FRM Part II · FRM Exam Part II · Estimating Market Risk Measures: An Introduction and Overview
A portfolio manager models daily portfolio P/L as normally distributed with a mean of USD 20,000 and a standard deviation of USD 100,000. Using z = 1.645 for 95% confidence, what is the one-day 95% VaR measured relative to zero (i.e., as a loss figure that includes the mean)?
VaR relative to zero equals z times sigma minus the mean: 1.645 times 100,000 is 164,500, less the 20,000 expected profit, giving USD 144,500. A positive expected return reduces the loss threshold at the confidence level.
- AUSD 144,500Correct
- BUSD 164,500
- CUSD 184,500
- DUSD 20,000
Explanation
Normal VaR on P/L = -mu + z*sigma = -20,000 + 1.645*100,000 = 164,500 - 20,000 = 144,500. Option USD 164,500 ignores the positive mean (VaR relative to the mean). USD 184,500 adds the mean with the wrong sign.
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