What Is Drawdown? Why It Matters More Than Returns
Drawdown is the drop from a peak in your account value to the lowest point that follows, before a new peak is made. Maximum drawdown is the worst such drop over a period — and it's arguably the most honest number in trading, because it measures the pain you actually have to live through.
Returns get the headlines. Drawdown decides whether you're still around to collect them.
A quick example
Say your account grows to $12,000, then falls to $9,000 before recovering. That fall is a drawdown of $3,000, or 25%. If $9,000 is the lowest it ever gets across the whole period, then 25% is your maximum drawdown. It answers a simple, vital question: "What's the worst it got?"
Why recovery math is brutal
Here's the part that surprises people. Losses and the gains needed to undo them are not symmetrical:
- Lose 10% → you need +11% to recover
- Lose 25% → you need +33%
- Lose 50% → you need +100%
- Lose 80% → you need +400%
The deeper the hole, the disproportionately harder the climb out. This is exactly why protecting against large drawdowns matters more than chasing large returns — and why position sizing is the skill that keeps you solvent.
The human factor: drawdown isn't just math — it's psychology. Most traders abandon a perfectly good strategy during a deep drawdown, locking in the loss at the worst moment. Knowing a strategy's likely drawdown in advance is what lets you hold on.
Drawdown vs. the Sharpe ratio
The Sharpe ratio tells you about risk-adjusted return on average; drawdown tells you about the worst case. You want both. A strategy with a great Sharpe but a 60% max drawdown is one almost nobody can actually stick with. Read them together.
How to use it
- Know your number before you trade. A backtest's max drawdown is your preview of the worst-case pain.
- Size for the drawdown you can stomach. If a 30% drop would make you quit, build a system that's unlikely to reach it.
- Compare strategies by drawdown, not just return. Smoother equity curves are easier to hold — and easier to leverage safely.
The best strategy isn't the one with the highest return. It's the one with the highest return you can actually survive.
Key takeaway
Drawdown measures the worst-case fall in your account, and recovering from a big one is mathematically punishing. Judge a strategy by the drawdown you'd have to endure — not just the returns it advertises.
Kudbee Quant puts maximum drawdown next to every backtest, so you see the pain before you feel it. Join the waitlist to trade with your eyes open.
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