Calmar Ratio
Quick Definition
A risk-adjusted performance ratio that divides annualized return by maximum drawdown, measuring return earned per unit of peak-to-trough loss.
What Is Calmar Ratio?
The Calmar ratio evaluates performance relative to the worst-case scenario by dividing annualized return by maximum drawdown. It's especially popular among hedge fund and CTA (commodity trading advisor) analysts.
Formula: Calmar Ratio = Annualized Return / |Maximum Drawdown|
Interpreting Calmar Ratios:
| Calmar Ratio | Interpretation |
|---|---|
| > 3.0 | Excellent |
| 2.0 - 3.0 | Very good |
| 1.0 - 2.0 | Good |
| 0.5 - 1.0 | Acceptable |
| < 0.5 | Poor risk-adjusted returns |
Example Calculation:
- Fund A: 15% annual return, -20% max drawdown → Calmar = 0.75
- Fund B: 10% annual return, -8% max drawdown → Calmar = 1.25
- Fund B is superior despite lower absolute return
Calmar vs. Other Ratios:
| Ratio | Risk Measure | Best For |
|---|---|---|
| Sharpe | Standard deviation | General risk-adjustment |
| Sortino | Downside deviation | Asymmetric strategies |
| Calmar | Maximum drawdown | Worst-case analysis |
| Treynor | Beta | Diversified portfolios |
Advantages:
- Intuitive: "How much return for the worst loss?"
- Captures extreme risk that standard deviation misses
- Particularly useful for strategies with tail risk
Limitations:
- Sensitive to time period (one bad year can dominate)
- Drawdown may not repeat (unique historical event)
- Standard period is 36 months (rolling)
Formula
Formula
Calmar = Annualized Return / |Max Drawdown|Calmar Ratio Example
- 1A hedge fund with 18% return and -12% max drawdown has a Calmar ratio of 1.5 — very solid
- 2S&P 500 long-term: ~10% return with -56% max drawdown = Calmar of 0.18 — showing the cost of market risk
Related Terms
Maximum Drawdown
The largest peak-to-trough decline in portfolio value before a new peak is reached, measuring worst-case loss.
Sharpe Ratio
A risk-adjusted return metric measuring excess return per unit of risk, helping compare investments with different risk levels.
Sortino Ratio
A risk-adjusted performance measure that only penalizes downside volatility, unlike the Sharpe ratio which penalizes all volatility.
Risk-Reward Ratio
The ratio comparing the potential loss (risk) to the potential gain (reward) of a trade or investment, expressed as risk:reward.
Standard Deviation
A statistical measure of how spread out returns are from the average, quantifying investment volatility and risk.
Risk Management
The systematic process of identifying, assessing, and mitigating financial risks to protect portfolio value and achieve investment objectives.
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