Backtest Metrics Decoded: CAGR, Sharpe, Calmar, Max Drawdown and More

You open a backtest report and see: “CAGR 46.8%, Sharpe 1.42, Calmar 0.99, Max DD -47.3%, Win Rate 42%.” What do these numbers actually mean? Which ones matter most? And what makes a “good” result? This guide breaks down every metric you’ll encounter in quantitative trading.

Return Metrics

CAGR (Compound Annual Growth Rate)

The most important single number. CAGR tells you the annualized return, accounting for compounding. If a strategy turns $10,000 into $50,000 over 8 years, the CAGR is about 22%. It’s the “if I did this every year” number.

• Below 10%: Underperforming most index funds — not worth the effort
• 10-25%: Solid. You’re in hedge fund territory
• 25-50%: Exceptional. Very few strategies sustain this long-term
• Above 50%: Suspicious — check for overfitting or short test periods

Total Return

The cumulative gain over the entire test period. A strategy with 520% total return over 8 years sounds impressive, but CAGR gives you a fairer comparison across different time periods. Always look at CAGR first.

Risk Metrics

Maximum Drawdown (Max DD)

The largest peak-to-trough decline in your equity curve. If your portfolio grew to $100,000 then dropped to $53,000 before recovering, your max drawdown is -47%. This is arguably the most important risk metric because it tells you the worst pain you’d have to endure.

• Above -20%: Excellent risk management
• -20% to -40%: Good, typical for trend-following strategies
• -40% to -60%: Significant — can you stomach a 50% drop?
• Below -60%: Dangerous — similar to or worse than Buy & Hold for volatile assets

Sharpe Ratio

Measures risk-adjusted returns: (Strategy Return – Risk Free Rate) / Standard Deviation of Returns. In plain English: how much return are you getting per unit of risk?

• Below 0.5: Poor risk-adjusted returns
• 0.5-1.0: Acceptable
• 1.0-2.0: Good — most successful hedge funds target this range
• Above 2.0: Exceptional (or too-good-to-be-true — verify the backtest)

Calmar Ratio

CAGR divided by Maximum Drawdown (absolute value). It directly answers: “how much annual return do I get for every percentage of worst-case loss?” A Calmar of 1.0 means your CAGR equals your max drawdown — generally considered the minimum acceptable threshold for a serious strategy.

• Below 0.5: Risk outweighs the reward
• 0.5-1.0: Acceptable
• 1.0-2.0: Good — healthy risk/reward balance
• Above 2.0: Excellent risk-adjusted performance

Sortino Ratio

Like Sharpe, but only penalizes downside volatility. Upside volatility (your strategy suddenly making a lot of money) doesn’t count as “risk.” More realistic than Sharpe for strategies with asymmetric returns (big wins, small losses). Same scale as Sharpe, but Sortino will always be equal or higher since it ignores upside variance.

Trade Metrics

Win Rate

Percentage of trades that are profitable. Counterintuitively, many excellent strategies have low win rates (30-40%). This is normal for trend-following: most trades are small losses during choppy markets, but the few winning trades during strong trends are massive. A strategy with 35% win rate but 5x win/loss ratio is extremely profitable.

Win/Loss Ratio (Payoff Ratio)

Average winning trade divided by average losing trade. If your average win is +50% and average loss is -10%, your W/L ratio is 5x. Combined with win rate, this determines overall profitability:

• High win rate + low W/L ratio: “Picking up pennies in front of a steamroller” — lots of small wins, occasional catastrophic loss
• Low win rate + high W/L ratio: Classic trend following — lots of small losses, occasional massive win
• The math: Strategy is profitable when (Win Rate × Avg Win) > ((1 – Win Rate) × Avg Loss)

Time in Market

What percentage of time your capital is invested (vs sitting in cash). A strategy with 50% time in market that matches Buy & Hold returns is actually twice as capital-efficient — you could use the idle capital elsewhere. Time in market also represents risk exposure: less time in = less exposure to unexpected crashes.

What “Good” Actually Looks Like

Based on our testing of 10 Bitcoin strategies, here’s what top-performing strategies share:

• CAGR above Buy & Hold (currently ~25% for BTC over the 2018-2026 period)
• Max drawdown significantly below Buy & Hold’s -76.6%
• Calmar ratio above 0.5 (ideally above 1.0)
• Time in market below 60% (capital efficiency)
• A clear, logical reason why the strategy works (not just data mining)

Our best strategy so far — RSI trend following — has a 53.2% CAGR with -67% max drawdown (Calmar ~0.79). The ADX strategy has a lower 46.8% CAGR but only -47.3% max drawdown (Calmar ~0.99). Which is “better” depends on your risk tolerance.

The single most important thing: never evaluate a strategy on CAGR alone. A 100% CAGR with -90% max drawdown means you’d have watched 90% of your money vanish at some point. Most people can’t survive that psychologically, even if the strategy eventually recovers. The best strategy is the one you can actually stick with.

Learn how different strategy types perform in our strategy types guide, or see all our backtest results with real data.