Most traders track how much they've made. Far fewer track how much they've given back along the way. Max drawdown measures exactly that — the largest decline your account has experienced from a peak before recovering — and it's one of the most important numbers for understanding whether a strategy is something you can actually live with, not just something that looks good on paper.
A strategy with excellent average returns and a brutal drawdown can be unusable in practice, because most traders abandon a strategy during the drawdown — right before it would have recovered. A strategy with modest returns and a shallow drawdown can be far easier to actually stick with over years.
What max drawdown actually measures
Max drawdown is the largest peak-to-trough decline in your account equity over a given period, measured from a high point to the lowest point reached before a new high is set.
Max drawdown = (Trough value − Peak value) ÷ Peak value × 100
If your account grows from $10,000 to $14,000, then falls to $11,200 before recovering and eventually setting a new high: Drawdown = ($11,200 − $14,000) ÷ $14,000 × 100 = −20%. The dollar figure — $2,800 in this example — matters too, but the percentage is what makes drawdowns comparable across different account sizes. A $2,800 drawdown on a $14,000 account is a serious event. The same dollar figure on a $140,000 account is a 2% blip.
Drawdown vs. a single loss
A single losing trade is not a drawdown — it's one data point within a drawdown period, which is only measured from peak to the lowest subsequent point before a new high is reached. A drawdown period can include winning trades. What matters is the net distance traveled from peak to the lowest subsequent point, not the path taken to get there.
Why max drawdown matters as much as returns
It measures the pain you actually have to sit through
A strategy's average return tells you what to expect over a long enough period. It says nothing about what the worst stretch along the way feels like to live through. Two strategies with identical average annual returns can have completely different drawdown profiles — one might decline gently and predictably, the other might lose 35% of account value before recovering. The second is far harder to hold through, even if the long-run math is identical.
Larger drawdowns require disproportionately larger recoveries
The percentage gain required to recover from a drawdown grows faster than the drawdown itself. A 10% drawdown requires an 11.1% gain to recover. A 20% drawdown requires 25%. A 30% drawdown requires 42.9%. A 40% drawdown requires 66.7%. A 50% drawdown requires a full 100% gain to break even, because the recovery is calculated on a smaller remaining balance. A 60% drawdown requires a 150% gain.
The deeper the drawdown, the more the math works against you on the way back. This is the single best argument for taking drawdown seriously before it happens, not after.
It's the most common reason traders abandon working strategies
Strategies with a genuine, positive long-run edge still produce losing stretches — that's normal variance, not strategy failure. The problem is that a serious drawdown often arrives indistinguishable, in the moment, from a strategy that's stopped working. Traders who don't know their strategy's historical drawdown range have no way to tell the difference, and many abandon a sound approach during exactly the period it would have recovered.
Max drawdown vs. average drawdown
Max drawdown captures the worst single decline in the data — useful for understanding the worst case, but a single number from one bad stretch can be a misleading guide to what to expect day to day. Average drawdown — the mean of all drawdown periods, not just the largest — gives a more representative picture of what a typical rough patch looks like. If your max drawdown is 35% but your average drawdown is 8%, the 35% event was an outlier. If max and average are close together, the worst case isn't really an outlier — it's closer to what you should expect to experience repeatedly.
Related metrics worth tracking alongside both: number of drawdowns (how frequently you enter a decline period at all) and average trades in drawdown (how long a typical decline lasts before recovering).
What a reasonable drawdown looks like
There's no universal "good" drawdown number — it depends on the strategy, the trader's risk tolerance, and what return the drawdown is being weighed against. General patterns: under 10% is generally manageable for most traders psychologically, common in lower-volatility strategies. 10–20% is a meaningful decline requiring discipline to hold through, within the range many active strategies experience periodically. 20–35% is serious and tests most traders' conviction — strategies in this range need correspondingly strong long-run performance to justify the ride. Above 35% is severe, and position sizing typically needs re-examination regardless of how strong average returns look.
The number that matters most isn't the drawdown in isolation — it's the drawdown relative to the returns it's buying. A strategy with a 15% average annual return and a 12% max drawdown has a very different risk profile than one with the same return and a 40% max drawdown, even though the upside looks identical on paper.
How drawdown relates to position sizing
Drawdown is directly affected by position sizing, which means it's one of the few metrics a trader can meaningfully influence without changing their underlying strategy at all. Doubling position size on the same setups roughly doubles the depth of any given drawdown, without necessarily doubling the strategy's actual edge. A drawdown that's deeper than your strategy's historical norm, with no change in win rate or profit factor, often points to a sizing issue rather than a strategy problem — the setups are working the same way they always have; the dollars at risk per setup have simply grown.
How to track drawdown in your trading journal
Drawdown is most useful when viewed directly on your equity curve, where the shape of the decline — sharp and short, or slow and prolonged — is immediately visible in a way a single percentage figure can't fully convey.
In your weekly trade review, check whether you're currently in a drawdown and, if so, how it compares to your historical average. A drawdown that's already exceeded your typical range is worth investigating specifically — has trade quality declined, has position sizing crept up, or is this simply a longer stretch of normal variance than you've experienced before.
It's also worth tracking how many trades or days it typically takes you to recover from a drawdown of a given size. This builds a realistic expectation for the next one — rather than each new drawdown feeling like uncharted, alarming territory, you have a reference point for how long similar declines have taken to resolve in the past.
TheSpeculatorsJournal's equity curve automatically tracks your peak equity, current drawdown, max drawdown, and average drawdown — so you can see exactly where you stand relative to your historical range at any point. Start a free 7-day trial and see your own drawdown history without building a single chart by hand.
FAQ
What is a good max drawdown for a trading strategy?
There's no fixed number that applies universally — it depends on the strategy's average returns and the trader's tolerance for volatility. Many traders consider drawdowns under 15–20% manageable for active strategies, with anything beyond that requiring correspondingly strong returns to justify the risk. The more useful comparison is always drawdown relative to return, not drawdown in isolation.
How is drawdown different from a losing streak?
A losing streak is a sequence of consecutive losing trades. A drawdown is measured from your account's peak value to its lowest subsequent point, and can include winning trades mixed in along the way. A losing streak often contributes to a drawdown, but the two aren't the same measurement.
How long should it take to recover from a drawdown?
This varies enormously by strategy and is one of the most useful things to learn from your own trading history rather than a general rule. Tracking the number of trades or days it has taken you to recover from past drawdowns of similar size gives you a realistic reference point.
Should I change my strategy if I'm in a drawdown?
Not automatically. A drawdown within your strategy's normal historical range is expected variance, not evidence the strategy has stopped working. The more useful question is whether the drawdown is deeper or longer than your historical pattern, and if so, whether trade quality, win rate, or position sizing has changed. Changing a strategy reactively during a normal drawdown is one of the most common ways traders abandon a sound approach right before it would have recovered.
Does max drawdown account for unrealized losses on open positions?
This depends on how it's calculated. Some calculations use only closed-trade equity; others use mark-to-market account value including open positions. For the most accurate picture of risk, drawdown calculated on mark-to-market value is more representative of what you'd actually experience if you needed to close everything at that moment.
How does drawdown relate to risk of ruin?
They're related but distinct. Drawdown measures a decline the account recovers from. Risk of ruin refers to the probability of losing enough capital that recovery becomes impractical. Strategies with very large historical drawdowns carry a higher practical risk of ruin, because a drawdown deep enough, combined with continued poor position sizing, can cross from "painful but recoverable" into "effectively game over."
Conclusion
Max drawdown measures the worst decline your account has experienced from a peak — and it deserves as much attention as your returns, because it's the number that determines whether a strategy is something you can actually hold through in practice, not just something that looks good averaged over a long enough period.
A strategy's returns tell you what to expect over time. Its drawdown tells you what the road there actually feels like — and because the math of recovery gets disproportionately harder the deeper a drawdown goes, understanding your own drawdown history before a bad stretch arrives is far more useful than trying to reason about it for the first time while you're in the middle of one.
Track it. Compare current drawdowns against your historical average and max. And remember that a drawdown within your normal range is the cost of admission for the strategy's long-run edge — not evidence that the edge has disappeared.
This article is for educational purposes only and is not financial advice. Trading involves risk, and past performance does not guarantee future results.