What Is a Drawdown — and Why Should Every Investor Know It?
Most investors look at returns. Professionals look at drawdown first. The drawdown measures how far a price has fallen from its previous high — in percent. A drawdown of -20% means: you are sitting on a paper loss of one fifth of your investment.
Sounds abstract? It becomes concrete when you see the numbers. We analyzed 130 years of Dow Jones — from 1896 to today.
How Drawdown Is Calculated
The formula is simple:
Drawdown = (current price – highest price since year start) / highest price × 100
An example: the Dow Jones reaches a high of 29,551 points on February 12, 2020. On March 23, 2020, it stands at 18,591. The drawdown is -37.1%.
Important: the drawdown always starts at zero (new high) and can only fall or stay the same. It does not show total performance, but the loss risk from the last peak.
The 10 Worst Drawdowns in 130 Years of Dow Jones
Here are the hardest loss phases — and how long recovery took:
| Year | Max Drawdown | Peak | Trough | Recovery |
|---|---|---|---|---|
| 1931 | -62.0% | February | December | 74 months (until 1937) |
| 1932 | -53.6% | March | July | 12 months |
| 1929 | -47.9% | September | November | 346 months (until 1954!) |
| 1930 | -46.4% | April | December | 321 months |
| 1907 | -45.0% | January | November | 20 months |
| 2008 | -42.2% | May | November | 39 months (until 2012) |
| 1937 | -41.6% | March | November | 114 months |
| 2020 | -37.1% | February | March | 7 months (V-recovery) |
| 1987 | -36.1% | August | October | 22 months |
| 1974 | -35.2% | March | October | 13 months |
What Stands Out?
Three patterns stand out:
- Depth and duration do not always correlate. 2020 had a drawdown of -37%, but recovered in just 7 months. 1929 had -48%, but needed 25 years.
- The worst crashes come in clusters. 1929–1932 are four consecutive extreme years. This shows: after a crash it can get even worse.
- Modern crashes recover faster. Central banks intervene more quickly today. 2008 needed 39 months, 2020 only 7.
When During the Year Do the Biggest Pullbacks Occur?
Drawdown has a seasonal component. Over 130 years of Dow Jones, a clear pattern emerges:
- January to April: Moderate drawdowns (-2% to -5%)
- May to August: Rising pullbacks (-6% to -7%)
- September to December: The deepest drawdowns (-8% to -9%)
This aligns with the market wisdom "Sell in May." The second half of the year is historically riskier — not just in terms of return, but also in maximum pullback.
On SeasonAlpha you can break down the seasonal drawdown trajectory by decade-ending digit. This lets you see: do "x6-years" (2026, 2016, 2006, ...) behave differently from "x8-years" (2028, 2018, 2008)?
Recovery: The Underrated Metric
Most drawdown analyses end at the trough. Yet recovery time is at least equally important. It answers the question: how long do I have to wait until my portfolio reaches its previous level again?
Fast Recoveries
- 2020: 7 months — COVID crash, massive fiscal and monetary policy
- 1932: 12 months — recovery from the absolute low point of the Great Depression
- 1974: 13 months — after the oil price shock
Slow Recoveries
- 1929: 346 months (nearly 29 years!) — the September 1929 high was not reached again until November 1954
- 1930: 321 months — closely linked to the 1929 crash
- 1937: 114 months — second decline within the Great Depression
The Rule of Thumb
From 130 years of Dow Jones data: the deeper the drawdown, the longer the recovery — but not proportionally. A -40% crash takes on average 30–40 months to recover. A -50% crash can take 10 years — or 12 months (as in 1932).
The decisive factor is not the depth, but the macroeconomic context.
What Does This Mean for Your Analysis?
Drawdowns are not a reason for panic — they are a tool. If you know that the historical average drawdown of your portfolio is -15%, you can better contextualize a -10% pullback.
On SeasonAlpha you can find the drawdown trajectory under Decade Cycle and Annual Cycle:
- Decade Cycle → Drawdown & Risk: Average drawdown by decade-ending digit, worst-DD table with recovery, heatmap month × decade
- Annual Cycle → Seasonal Drawdown: Average drawdown curve with current year as overlay, percentile comparison, monthly heatmap
Further Reading: Return Rises, Drawdown Falls — How Do Both Fit Together?
If you look at the drawdown alongside the return chart for the first time, you may be puzzled: the return rises, but the drawdown keeps falling? That is not an error — it is due to the different calculation methods. In our article Return vs. Drawdown Explained we show with two charts why both can be true simultaneously.
Conclusion
Drawdown shows you the dark side of return. 130 years of Dow Jones prove: deep declines are part of the stock market — but recovery comes. The only question is: how long can you wait?
On seasonalpha.ai you can analyze the seasonal drawdown for over 500 stocks, ETFs, and crypto assets — for free, with real historical data.
Frequently Asked Questions
What is a good maximum drawdown?
That depends on the asset. The S&P 500 has a historical average drawdown of about -8% per year. Individual stocks can fluctuate considerably more. As a rule of thumb: a portfolio drawdown below -20% is considered acceptable for long-term investors.
How is recovery time calculated?
Recovery time counts the trading days from the trough until the price exceeds the previous high again. Important: this can extend beyond the year end. On SeasonAlpha, recovery is displayed in months and days.
What is the best time to enter after a crash?
Historical data shows: the best entry points are not at the absolute trough (which you only recognize in hindsight), but when the drawdown begins to stabilize. The seasonal analysis on SeasonAlpha helps identify typical recovery patterns.
Is drawdown for crypto different from stocks?
Yes, significantly. Bitcoin has historical drawdowns of -50% to -80% — far more than traditional indices. However, recoveries are often shorter. On SeasonAlpha, crypto assets are calculated with 365 trading days (instead of 252 for stocks).