Educational research only — not investment advice.
Maximum drawdown measures the largest decline an investment experiences from a previous peak to a later low.
It answers a very practical question:
How bad did the investment get before recovering?
That makes drawdown one of the most useful ways to understand investment risk.
What Is Maximum Drawdown?
Imagine a stock rises from:
$100 → $120
Then falls to:
$90
The decline from the $120 peak to the $90 low is:
25%
That is the drawdown.
If this is the largest peak-to-trough decline during the period being studied, then the maximum drawdown is 25%.
Why Drawdown Matters
Two investments can produce the same final return but feel completely different along the way.
Imagine both eventually gain 20%.
But:
Investment A falls only 8% at its worst point.
Investment B falls 40% before recovering.
The final return is the same.
The risk experience is not.
That is why maximum drawdown can reveal information that average return misses.
Large Losses Are Harder to Recover From
Losses become increasingly difficult to recover as they grow.
If an investment falls:
10%, it needs about 11% to recover.
If it falls:
25%, it needs about 33%.
If it falls:
50%, it needs 100%.
This is why avoiding extremely deep losses can matter as much as finding strong returns.
Drawdown Is Different From Volatility
Volatility measures how much prices move around.
Drawdown measures how far an investment falls from its previous peak.
A stock can be volatile without experiencing a catastrophic drawdown.
Another stock might appear calm for months and then suffer one very large decline.
So investors should not treat volatility and drawdown as the same risk measure.
Historical vs Simulated Drawdown
Maximum drawdown can be measured in two ways.
Historical drawdown looks at what actually happened in the past.
Simulated drawdown estimates how severe future declines might become across many possible market paths.
Monte Carlo simulations can generate hundreds or thousands of outcomes and measure the drawdown inside each one.
That gives investors a broader view of potential downside risk.
A High Return Can Hide High Drawdown
Suppose one strategy earns 15% per year but regularly experiences 40% drawdowns.
Another earns 11% but rarely falls more than 15%.
The first has the higher return.
But some investors may prefer the second because the downside is easier to tolerate.
This is why return should be considered alongside:
drawdown + volatility + probability of loss + tail risk
What Is a “Good” Maximum Drawdown?
There is no universal number.
A reasonable drawdown depends on:
- the asset
- the time horizon
- the strategy
- the investor’s risk tolerance
A 20% drawdown may be normal for one strategy and extreme for another.
The important point is comparison.
Ask:
How much downside was required to achieve the return?
Track Drawdown With TradingSimuLab
TradingSimuLab’s Risk Simulation tools help users study maximum drawdown, downside risk, probability of gain and simulated future price paths.
This helps users evaluate not only how much an investment might return, but also how severe the journey could become.
For more quantitative market research and educational trading tools, sign up to TradingSimuLab.
TradingSimuLab is for educational and research purposes only and does not provide investment advice.