Trading Drawdown Explained: How to Measure Strategy Downside

Trading drawdown is the percentage decline from a portfolio or strategy peak to a later trough before a new peak is reached. Maximum drawdown records the largest such decline across the measured period.

A simple example

Imagine an account changes like this:

• starts at $10,000;
• rises to a peak of $12,000;
• falls to $9,000;
• later recovers to $12,500.

The peak-to-trough decline is $3,000. Relative to the $12,000 peak, that is a 25% drawdown. The drawdown period begins after the peak and ends only when the account exceeds the previous peak.

Recovery is asymmetric

After a 25% decline, a 25% gain does not restore the account. Moving from $9,000 back to $12,000 requires a 33.3% increase because the gain starts from a smaller base.

• 10% loss requires about 11.1% to recover.
• 25% loss requires about 33.3%.
• 50% loss requires 100%.

This arithmetic is one reason downside limits matter even when a strategy has profitable periods.

Drawdown is not volatility

Volatility describes the size and frequency of price or return changes. Drawdown describes distance below a previous peak. A strategy can have frequent small changes with a long decline, or sharp volatility that quickly recovers. Both measures can be relevant, but they answer different questions.

FINRA’s volatility overview explains why larger price swings can create additional risk. Cryptoasset markets may be more continuous and structurally different, but the distinction between movement and loss from a peak remains useful.

Questions behind a maximum-drawdown number

A single percentage is incomplete without:

1. start and end dates;
2. live or simulated status;
3. inclusion of fees, spreads, and funding costs;
4. whether deposits and withdrawals were removed from the calculation;
5. the currency used for account valuation;
6. intraday data or end-of-day snapshots;
7. treatment of open positions.

Practical review

Track current drawdown, worst historical drawdown, time spent below the previous peak, and the number of simultaneous positions. Do not use an old maximum as a promise that future losses cannot be larger.

Drawdown should sit beside risk per trade, total exposure, liquidity, and operational controls. A strategy can respect every planned entry limit and still accumulate a serious drawdown through a sequence of losses.

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How this article was prepared

OpenTrader Editorial used AI assistance to organize research and improve clarity. A human reviewer is responsible for checking the sources, risk language, product statements, and final publication. Sources checked 25 August 2026. Read our Editorial Policy.

This material is general education, not financial advice or a recommendation to trade. Cryptoassets and automated trading can result in substantial or total loss. Read the Risk Warning.