What it means
Annual returns hide the journey. A fund that returns 8% for the year may have dropped 30% along the way, and the investors who sold during that fall never saw the 8%.
Drawdown percentage measures peak to trough, so it describes the experience rather than the endpoint. The measure is calculated continuously rather than at fixed dates.
Each time the value sets a new high, that becomes the new peak, and the drawdown is measured from there until a new high is reached. The largest such fall over a period is called the maximum drawdown, and it is the single number most commonly quoted when comparing strategies.
Two features make drawdown particularly useful. It is easy to explain to non-specialists, since "you would have been down 30% at the worst point" needs no statistical background, and it maps directly onto behaviour, because most investors sell at the bottom of a large drawdown rather than at the top.
Fund selectors therefore treat maximum drawdown as a rough measure of whether a client could realistically hold the investment. The arithmetic of recovery is where drawdowns become alarming.
A 30% fall requires a gain of about 43% to get back to the peak, and a 50% fall requires 100%, because the recovery is calculated on the smaller remaining base. This asymmetry is the strongest argument for limiting large losses rather than chasing large gains.
Two related terms are worth knowing. Drawdown duration measures how long the account stayed below its previous peak, which for some strategies matters more than the depth, and the same word is used quite differently in banking, where drawing down a loan facility simply means taking the money.
In practice
Real-world examples.
Example
A wealth manager screening funds rejects one with an excellent five-year return because its maximum drawdown was 47%. The client is three years from retirement and could not have held the position through a fall of that size.
Example
A proprietary trading firm sets a hard rule that any strategy reaching a 12% drawdown is halved in size and any strategy reaching 20% is switched off pending review. The rule removed two strategies in a difficult quarter, both of which would have lost considerably more had they run on.
Example
A charity's finance committee reports drawdown percentage alongside total return each quarter, after trustees complained that a 6% annual return told them nothing about the 22% fall they had watched in the interim statements.
Formula
Calculation
Drawdown percentage = (Peak value - Trough value) / Peak value x 100
Recovery required = (Peak value - Trough value) / Trough value x 100
An investment portfolio reaches a high of $1,250,000 in January. Over the next seven months it falls to a low of $875,000 before beginning to recover.
Fall in dollars = $1,250,000 - $875,000 = $375,000
Drawdown percentage = $375,000 / $1,250,000 x 100 = 30%
The recovery arithmetic uses the lower figure as its base, which is why it looks worse.
Recovery required = $375,000 / $875,000 x 100 = 42.9%
So a 30% drawdown demands a 42.9% gain from the bottom just to return to the January peak. If the portfolio compounds at 8% a year from the trough, that recovery takes just under five years, which is the drawdown duration the investor should be planning around.Case study
Seen in the real world.
Pallister Endowment Advisers is an invented firm presented here for illustrative purposes only. It managed a $40,000,000 pool for a fictional arts foundation that drew 4.5% a year to fund its operating budget.
The portfolio peaked at $44,000,000 and fell over fourteen months to $30,800,000, a drawdown of 30%. The problem was not the drawdown itself but its interaction with the annual distribution: taking roughly $1,800,000 a year out of a portfolio already down 30% meant selling assets at the bottom and permanently reducing the base that had to recover. The foundation's real recovery requirement was materially worse than the 42.9% the raw arithmetic suggested.
Pallister restructured the arrangement around drawdown rather than return. It built a three-year distribution reserve in short-dated bonds, moved the foundation to a spending rule based on a rolling three-year average value, and set an agreed de-risking trigger at a 15% drawdown. The next significant market fall produced a 19% drawdown, and for the first time the foundation did not have to sell equities to pay its staff.
Watch out
Common mistakes.
- Calculating the recovery percentage from the peak rather than the trough, which understates how much of a gain is needed to get back to level.
- Comparing maximum drawdowns measured over different time periods, since a longer history has more opportunity to contain a deep fall.
- Reading drawdown from month-end figures only, which can miss a sharp intra-month fall that investors genuinely experienced.
Questions
People also ask.
What counts as an acceptable maximum drawdown?
It depends entirely on the investor, though many balanced portfolios are built to keep maximum drawdown in the 15% to 25% range, and anything beyond 30% tends to test even committed long-term holders.
Is drawdown the same as volatility?
No, volatility measures the typical size of movements in both directions, while drawdown measures one specific realised fall from a high point.
Why does the same word appear in loan agreements?
In lending, drawdown means taking money from an agreed facility, an entirely separate use of the term with no connection to investment losses.
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