Who this is for — Anyone who wants a single metric to see whether overall profits truly offset losses over time.
The profit factor is gross profits divided by gross losses in absolute terms. Above 1, the system is net positive; the higher it rises, the stronger the historical efficiency.
In plain terms — For every unit lost, how many units did you gain? That is the question profit factor answers.
Bronze prerequisite — Before this lesson: drawdown, risk-per-trade, risk-reward-ratio, r-multiple. See bronze-path.
Practical interpretation
Operational guidelines:
- PF below 1: method in loss.
- PF between 1 and 1.3: fragile, highly sensitive to costs.
- PF above 1.5: a solid base if confirmed on a large sample.
Read it alongside max-drawdown and expectancy. A high PF with an unmanageable drawdown is not automatically usable.
Example — In one quarter you record €12,000 in gross profits and €8,000 in gross losses. Profit factor = 1.5. If the result depends on a single exceptional trade, robustness remains doubtful.
Typical analysis mistakes
- Evaluating PF on too few trades.
- Not separating periods or different setups.
- Ignoring real operating costs.
- Using it alone without risk metrics.
Card
- What it is: ratio of gross profits to gross losses.
- Use: measures aggregate historical efficiency.
- Quality check: large sample and no dominant outliers.
Silver path — Module: Operational metrics. Part of silver-path.