What is Profit Factor?
A single number that summarises whether a trading system is profitable — and what values are acceptable.
The formula
Profit Factor = Total Gross Profit ÷ Total Gross Loss
If a system generated $5,000 in total profits and $2,000 in total losses, the profit factor is 2.5.
How to interpret it
- Below 1.0 — losing system. Losses exceed profits. Do not trade it.
- 1.0–1.5 — marginally profitable. Sensitive to costs (commissions, slippage). Fragile.
- 1.5–2.0 — solid. Most professional trading systems fall in this range.
- Above 2.0 — strong. Consistently profitable with good margin. Either a great system or the sample size is too small to be statistically meaningful.
- Above 3.0 — exceptional. Very rare in real trading with large sample sizes. Be sceptical of small sample sizes.
The sample size problem
A profit factor of 3.0 from 10 trades means almost nothing statistically. You need at least 50–100 trades before a profit factor becomes meaningful. TradeMind AI's leaderboard and performance stats gain reliability as the total signal count grows.
Profit factor vs win rate
A system with a 40% win rate can have a high profit factor if the average win is 3× the average loss. Profit factor captures both dimensions (win rate and win/loss size) in a single number, making it more useful than either metric alone.
See it in action
Every TradeMind AI signal shows confidence score, entry, stop, target, and R-multiple — all explained with tooltip hints when you hover the term.