Calculate portfolio risk metrics including VaR, CVaR, Sharpe, Sortino, and drawdown analysis. Use when measuring portfolio risk, implementing risk limits, or building risk monitoring systems.
Comprehensive risk measurement toolkit for portfolio management, including Value at Risk, Expected Shortfall, and drawdown analysis.
When to Use This Skill
Measuring portfolio risk
Implementing risk limits
Building risk dashboards
Calculating risk-adjusted returns
Setting position sizes
Regulatory reporting
Core Concepts
1. Risk Metric Categories
Category
Metrics
Use Case
Volatility
Std Dev, Beta
General risk
Tail Risk
VaR, CVaR
Extreme losses
Drawdown
Max DD, Calmar
Capital preservation
Risk-Adjusted
Sharpe, Sortino
Performance
2. Time Horizons
Intraday: Minute/hourly VaR for day traders
Daily: Standard risk reporting
Weekly: Rebalancing decisions
Monthly: Performance attribution
Annual: Strategic allocation
Detailed patterns and worked examples
Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.
Best Practices
Do's
Use multiple metrics - No single metric captures all risk
Consider tail risk - VaR isn't enough, use CVaR
Rolling analysis - Risk changes over time
Stress test - Historical and hypothetical
Document assumptions - Distribution, lookback, etc.
Don'ts
Don't rely on VaR alone - Underestimates tail risk