Win rate in trading
Family III · Risk
Not to be confused with average win loss ratio, win rate in trading.
Win rate in trading is the share of completed trades that ended in profit, calculated by dividing the number of winning trades by the total number of closed trades. It is a frequency measure, not a performance measure: a strategy can win most of its trades and still lose money if the average loss is larger than the average win. Win rate is therefore normally read alongside average win, average loss and the ratio between them.
How it is calculated
The calculation uses closed trades only. Open positions have no realised outcome and are excluded until they are exited. The formula is:
- Win rate = winning trades ÷ (winning trades + losing trades) × 100
Trades closed at exactly break-even are handled differently by different platforms and journals: some count them as losses, some exclude them from the denominator, and some report them separately. The same trade history can therefore produce slightly different win rates depending on the software used, so the convention should be stated whenever the figure is compared with another.
Worked example
That 36% figure is not a verdict on the strategy. If the 18 winners averaged 300 and the 32 losers averaged 100, gross profit is 5,400 against gross loss of 3,200, so the strategy is profitable despite losing most of its trades. The reverse also occurs: a 70% win rate with small wins and rare large losses can produce a net loss.
Why it is read with other figures
Win rate interacts directly with the payoff ratio, the average win divided by the average loss. The break-even win rate for a given payoff ratio is 1 ÷ (1 + payoff ratio). A strategy with a payoff ratio of 1 needs a win rate above 50% to break even before costs; one with a payoff ratio of 3 needs only 25%. This relationship means win rate and payoff ratio should always be quoted together, and neither should be treated as a standalone quality score.
Win rate also depends on the sample. A rate measured over twenty trades carries wide uncertainty, and a run of results can shift it substantially. Longer histories, and separate figures for different market conditions, give a more stable picture than a single headline percentage.
Often confused with
- average win loss ratio
- The average win loss ratio is a performance statistic that divides the mean profit of winning trades by the mean loss of losing trades over a chosen period, expressing how much the typical winner earns relative to the typical loser.
- win rate in trading
- The win rate in trading is the proportion of closed trades that produce a net profit, expressed as a percentage of all trades taken over a defined period.