Trading

Drawdown: Definition

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Simple Definition

The drop from a portfolio's peak value to its lowest point before it recovers — a measure of how painful the worst stretch was.

Why It Matters

Drawdown answers the question 'how bad did it get?' If an account grew to $12,000 and then fell to $9,000 before recovering, that's a 25% drawdown. It matters because people rarely quit a strategy at the top — they quit near the bottom of a deep drawdown, locking in the loss. A backtest with high returns but a brutal drawdown may be unlivable in practice, even if the math 'works' over the full period.

Key Points

  • Peak-to-trough decline before a new high is reached
  • Measures the financial and emotional pain of the worst stretch
  • A high-return strategy with a deep drawdown is often abandoned at the worst time

Related Terms

Common Questions

The drop from a portfolio's peak value to its lowest point before it recovers — a measure of how painful the worst stretch was. Drawdown answers the question 'how bad did it get?' If an account grew to $12,000 and then fell to $9,000 before recovering, that's a 25% drawdown. It matters because people rarely quit a strategy at the top — they quit near the bottom of a deep drawdown, locking in the loss.

Drawdown answers the question 'how bad did it get?' If an account grew to $12,000 and then fell to $9,000 before recovering, that's a 25% drawdown. It matters because people rarely quit a strategy at the top — they quit near the bottom of a deep drawdown, locking in the loss. A backtest with high returns but a brutal drawdown may be unlivable in practice, even if the math 'works' over the full period.

Peak-to-trough decline before a new high is reached

Measures the financial and emotional pain of the worst stretch

A high-return strategy with a deep drawdown is often abandoned at the worst time