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FRM Part II · FRM Exam Part II · VaR and Risk Budgeting in Investment Management

A portfolio has two assets with weights 60% and 40%, volatilities 20% and 10%, and correlation 0.5. Portfolio value is USD 100 million. Using z = 2.33 and a one-year horizon, what is the component VaR of the 40% asset, closest to?

Portfolio volatility is 14.42%. The second asset's covariance with the portfolio is 0.010, so component VaR is 0.4 x 0.010/0.1442 x 2.33 x 100, about USD 6.5 million, closest to USD 6.0 million. Stand-alone VaR of USD 9.3 million ignores diversification.

  1. AUSD 2.4 million
  2. BUSD 6.0 millionCorrect
  3. CUSD 9.3 million
  4. DUSD 5.0 million

Explanation

Variance = 0.36x0.04 + 0.16x0.01 + 2x0.6x0.4x0.5x0.2x0.1 = 0.0144+0.0016+0.0048 = 0.0208; sigma = 14.42%. Portfolio VaR = 2.33x0.1442x100 = 33.6m. Covariance of asset 2 with portfolio = 0.6x0.5x0.2x0.1 + 0.4x0.01 = 0.006+0.004 = 0.010. Component = 0.4 x 0.010/0.1442 x 2.33 x 100 = 6.46m. Closest option is 6.0 million. Stand-alone VaR would be 9.3 million, which ignores diversification.

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