What Is Profit Factor?
Profit factor is the ratio of gross profits to gross losses. Values above 1.0 indicate net profitability.
Quick Answer
Profit factor is the ratio of gross profits to gross losses. Values above 1.0 indicate net profitability.
What Does Profit Factor Measure?
Profit factor is total gross winning amount divided by total gross losing amount (often from closed trades). A profit factor of 1.5 means you make $1.50 for every $1.00 lost. It summarizes the payoff structure in one number and is widely used in backtesting and systematic trading. It does not account for timing, drawdowns, or position sizing.
Profit Factor = Gross Profits / Gross Losses (losses as positive number)Typical range: 1.0–3.0+; 1.2–2.0 common for robust strategies
How to Interpret Profit Factor
- 1PF > 1: strategy is net profitable
- 2PF 1.5–2.0+ often considered solid; > 2 very strong
- 3PF < 1: net losing; avoid or revise strategy
- 4PF can be inflated by a few huge wins; check distribution
How to Use Profit Factor in Backtesting & Portfolio Analysis
Common Mistakes to Avoid
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