Glossary

Profit factor

Gross profit divided by gross loss. 1 is breakeven, above 1.5 is considered healthy, above 2 strong; very high values raise suspicion of overfitting.

Profit factor is another way of expressing expectancy and is standard in backtest reports. With costs included, 1.3-1.8 is a realistic range.

Don't rely on a single metric: profit factor, maximum drawdown, number of trades and longest losing streak are judged together.

Related terms

Where it appears in the guides

Guides whose text uses this term; most frequent first.