Value at Risk quantifies an expected loss under ordinary market conditions. On the Gold path it is useful only alongside metrics on extreme tails.
Gold path — Module: Advanced risk control. Part of gold-path.
Who this is for
- Anyone managing a multi-strategy portfolio.
- Anyone who must define shared numeric risk limits.
- Anyone reporting risk to stakeholders or investors.
Prerequisites — Complete silver-path first (min.: max-daily-risk, max-drawdown, robustness, backtest). Foundation: bronze-path.
In plain terms — VaR says: with a given probability you will not lose beyond a threshold. It does not say what happens in the worst case beyond that threshold.
How to use it well
Define time horizon and confidence level consistent with your operations. Compare historical, parametric, and simulated VaR to avoid false precision. Monitor the gap between actual losses and estimates to validate the model. Integrate VaR with stress tests and fat-tail controls. Do not use VaR as the only decision signal.
Example — Daily VaR at 95% equals €18,000. That means on 95% of days loss should stay below that level. In the remaining 5% loss can be much higher.
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- Goal: standardise the language of risk.
- Key inputs: volatility, correlations, return distribution.
- Warning sign: frequent breaches of expected VaR.
- Typical mistake: ignoring tail risk.
- Practical action: monthly validation with VaR backtesting.