Trading
Profit Factor
Gross profits divided by absolute gross losses, indicating how much profit a strategy generates per dollar of loss.
Formula
Profit Factor = Gross Profit ÷ |Gross Loss|
Variables
Gross Profit- Sum of all winning trade amounts
Gross Loss- Absolute value of sum of all losing trade amounts
Worked Example
Scenario: $18,000 in wins and $12,000 in losses = profit factor of 1.50.
Steps:
- Sum all profitable trades: $18,000
- Sum all losing trades in absolute terms: $12,000
- Divide: $18,000 ÷ $12,000 = 1.50
When to Use This Formula
- Evaluate overall trading strategy profitability
- Compare strategies on aggregate basis
- Identify strategies with favorable payoff structure
Limitations & Assumptions
- Ignores win rate and number of trades
- Outlier wins can inflate the ratio
- Does not account for slippage, commissions, or financing
Common Questions
What profit factor is breakeven?
1.0. A ratio below 1.0 means losses exceeded wins; above 1.0 means wins exceeded losses before costs.
Can profit factor be high with low win rate?
Yes. If you have infrequent but large wins against many small losses, profit factor is high but win rate is low.
Measuring return and risk
- Win rate formulaFormula
- Risk-reward ratio formulaFormula
- Beta formulaFormula
- Alpha formulaFormula
- Sharpe ratioDefinition
Reference note: This is an educational mathematical reference. The formula's applicability depends on assumptions, market conditions, and use case. Always verify results independently and consult domain experts for decisions.