Drawdown

Drawdown is the peak-to-trough loss from a high point to the next low, a blunt measure of pain.

Why investors care

It tells you the worst real-life loss you would have endured, not just averages.

Using it in practice

Choose investments whose historical max drawdown you could actually survive without selling. If a strategy’s worst drop would make you panic, size it smaller so the dollar loss stays tolerable.

Example in numbers

In the real market

A fund advertises a 15% average annual return, so an investor puts in their entire savings. In the next crash the fund falls 55% — its historical max drawdown, which was buried in a footnote. The investor, needing the money for a down payment, sells at the bottom and locks in the loss. The average said 15%; the drawdown said the account could halve. Every investor should size positions by the worst case they can survive, not the average case they hope for.

Where people go wrong

Recovery is asymmetric: a 50% drop needs a 100% gain just to break even.

Key takeaway

Drawdown is the real pain a portfolio can inflict, and recovery is brutally asymmetric: a 50% drop needs a 100% gain just to break even. Average returns hide this completely, which is why so many investors discover their true tolerance only after selling at the bottom. Size positions so the worst-case drawdown is survivable without panic, because the plan, not the prediction, is what carries you through. Know the worst before it arrives.

Definitions reviewed by the Investing Glossary editorial team.