Drawdown measures the decline of a performance curve from a previous peak to a later low before that peak is recovered. Unlike a single losing trade, it describes a sequence: how far the account or strategy falls after reaching a high-water mark.
A simple example
If an equity curve rises from 10,000 to 11,000 and then falls to 10,200, the drawdown from that peak is 800 monetary units. As a percentage, the decline is measured relative to the 11,000 peak. If the curve later moves above 11,000, a new reference peak is created.
What is maximum drawdown?
Maximum drawdown is the largest peak-to-trough decline observed during the period being analyzed. It answers a different question from “how much did the strategy make?”: how deep a decline did the strategy experience while producing that result?
Depth and duration are different
Two drawdowns can have the same depth and feel very different. One may recover in a few trades while another lasts for weeks or months. When possible, review both magnitude and the time or number of trades required to recover the previous peak.
Drawdown in money, percentage or R
Drawdown can be measured in currency, percentage or risk units. Percentage helps compare periods with different account sizes; R can help separate the analysis from monetary size when risk per trade remains consistent.
How to interpret it correctly
A historical drawdown does not automatically define future drawdown. It describes what happened under a specific sample and set of conditions. If strategy, size, market or volatility regime changes, the future distribution can be different.
Trade count matters too: drawdown calculated from 20 trades contains far less information than drawdown observed across hundreds of trades.
Comparing strategies with drawdown
Total profit alone can favour more aggressive strategies. Adding drawdown shows how that profit was achieved. This does not mean the strategy with the lowest drawdown is automatically “better”; it simply adds a risk dimension that P&L alone does not show.
How Trading Life Journal can help
TLJ connects historical evolution, drawdown, results, strategies and risk. This makes it easier to see whether deeper declines cluster around specific periods, markets, mistakes or behavioural changes.
Practical application
Drawdown should not be analysed only as a maximum percentage. Duration, number of trades and cause also matter. Two -8% periods can be very different if one comes from normal statistical variance and the other from repeated execution mistakes.
Review checklist
- Measure drawdown depth, duration and number of trades.
- Compare monetary drawdown with drawdown in R.
- Separate strategy losses from plan-adherence mistakes.
- Check whether recovery depends on one unusually large winner.
Frequently asked questions
Does a high drawdown mean the strategy is bad?
Not by itself. Compare it with historical behaviour, sample size, expected volatility and the return generated.
Should I stop trading at a specific drawdown?
That rule should be defined before the drawdown happens. You may reduce risk, pause or review at set thresholds, but avoid inventing thresholds while under pressure.