Key Metrics for Evaluating Trading System Performance
Summary from this tweet from Laurens Bensdorp
Here’s what seems to matter most:
Core Performance Metrics:
- CAGR (Compound Annual Growth Rate) and its variants
- CAGR/UI (Ulcer Index) ratio
- CAGR/MaxDD (Maximum Drawdown)
- Some use RAR (Risk-Adjusted Return) instead of CAGR for more date-independent analysis
- Risk Management Metrics:
Maximum Drawdown
- Average Exposure (particularly important for mean reversion strategies)
- Drawdown Correlation
- Total Drawdown
- Ulcer Index
- Trade Quality Indicators:
Profit Factor
- Expectancy
- System Quality Number (SQN)
- Win Ratio
- Standard Deviation of Returns
- Coefficient of Variation
- Strategy-Specific Considerations:
For Stocks:
- Individual trade statistics
- Capital utilization efficiency
- Average capital use per trade
For Futures:
- Risk metrics
- Drawdown analysis
- Trend gain patterns
Advanced Analysis:
- Walk-forward testing results consistency
- Performance during “black swan” events (1987 crash, flash crashes)
- Stagnation periods
- Monthly Return on Risk (RoR)
- Monthly dollar performance
Evaluation Method Tip:
Some traders use conditional formatting with color ranking to aggregate multiple metrics, helping identify top-performing systems more easily.