The asymmetry of recovery
Losses and gains are not measured on the same base. Lose 50% and your capital is halved, so you need a 100% gain on that half — not 50% — to return. This is not wordplay but a direct consequence of the second percentage being calculated on a smaller base.
The table shows why preventing a deep drawdown matters far more than curing one:
- A 10% drawdown needs an 11.1% gain — manageable.
- A 25% drawdown needs 33.3% — hard.
- A 50% drawdown needs 100% — rare.
- A 75% drawdown needs 300% — effectively the end of the account.
The psychological drawdown arrives first
The arithmetic is not the only problem. A losing streak is statistically normal in any strategy with a win rate below 100%, but living through one pushes many traders to double size to make it back — the single behaviour capable of turning an ordinary drawdown into a dead account.
In the reference record below, a win rate of 40% means a run of five consecutive losses is not evidence of a broken system but an expected outcome. A trader who knows this in advance sticks to the plan; one who does not changes it at the worst possible moment.
Where this number sits among performance measures
Three numbers describe any strategy completely: win rate, risk-to-reward, and the expectancy that combines them. None of them means anything alone.
The reference record for this family: 100 trades, 40 winners averaging +2R and 60 losers averaging −1R. A win rate of 40% looks weak on its own, yet expectancy is positive at +0.20R per trade. Drawdown is the price you pay to reach that expectancy, and it decides whether you are still trading when it arrives.
The formula
Gain required to recover = drawdown ÷ (1 − drawdown)
A worked example
A $1,000 account peaked at 1,200 then fell to 900. Drawdown is measured from the peak, not the deposit: (1,200 − 900) ÷ 1,200 = 25%. Returning to 1,200 requires 300 ÷ 900 = 33.3%.
With the reference record — an expectancy of +0.20R per trade — recovering 33.3% at 1% risk per trade takes dozens of trades, not a handful. That is the number to know before the drawdown rather than after, because it determines whether the plan is executable at all.
Common mistakes with this term
- Measuring drawdown from the deposit instead of the account's peak, understating it.
- Doubling position size to make losses back, which turns an ordinary drawdown into a dead account.
- Reading a losing streak as proof the system failed, when it is expected at any win rate below 100%.