3-Point Calculator: Enter values from a single drawdown episode. This does not compute drawdown from time-series data. Works with any currency or unit.

Enter Values

$
Highest value before decline
$
Lowest value during decline
$
Value today
months
0 = unknown (not used in calculations)
Loss Asymmetry
-35% requires +53.85% to recover
Required Gain = Peak / Trough - 1
Gains compound on a smaller base after losses
Ryan O'Connell, CFA
Calculator by Ryan O'Connell, CFA

Drawdown Results

Maximum Drawdown -35.00% Still Underwater
Current vs Prior Peak 82.00%
Required Gain From Trough +53.85%
Gain Since Trough +26.15%
Drawdown Recovered 48.57%
Remaining Gain Needed +21.95%
Peak-to-Trough Duration 8 months

Formula Breakdown

Model Assumptions

  • User-supplied values: You enter Peak, Trough, and Current values from a drawdown episode
  • Single episode: Peak and Trough must be from the same drawdown event
  • "Maximum" is user-asserted: This is only the true maximum drawdown if you've identified the worst historical pair
  • Current >= Trough: Trough is the lowest point of this episode
  • Duration informational: Not used in calculations
  • Educational purposes: Not financial advice

Understanding Maximum Drawdown

Video Explanation

Video: Maximum Drawdown Explained

What is Maximum Drawdown?

Maximum drawdown (MDD) measures the largest peak-to-trough decline in a portfolio's value before a new peak is established. Unlike volatility metrics that treat upside and downside equally, drawdown focuses exclusively on actual losses experienced.

Maximum Drawdown Formula
Max Drawdown = (Trough - Peak) / Peak
Required Gain to Recover = Peak / Trough - 1
Note: Drawdown is always negative; required gain is always positive

The Asymmetry of Losses

One of the most important concepts in risk management is that losses and gains are not symmetric. A 50% loss requires a 100% gain to recover. A 90% loss requires a 900% gain.

-35% Drawdown

Portfolio drops from $1,000,000 to $650,000. You now have only 65% of your original capital.

+53.85% to Recover

To get from $650,000 back to $1,000,000, you need $350,000 gain, which is 53.85% of $650,000.

MDD vs VaR

Value at Risk (VaR) estimates potential future loss at a confidence level (e.g., "95% confident daily losses won't exceed $X"). It's forward-looking and probabilistic.

Maximum Drawdown measures actual historical loss from peak to trough. It's backward-looking and deterministic. VaR tells you what might happen; drawdown tells you what did happen.

Calmar Ratio: The Calmar ratio = Annualized Return / |Max Drawdown|. A ratio of 1.0 means the fund earns its annual return for every percentage point of maximum drawdown risk. See our Calmar Ratio Calculator.

Frequently Asked Questions

Maximum drawdown (MDD) measures the largest peak-to-trough decline in a portfolio's value. In this calculator, you enter the Peak, Trough, and Current values from a drawdown episode you've identified. The result is only the "maximum" if you've found the worst historical pair. It represents the worst cumulative loss an investor would have experienced during that period.

Hedge fund investors care deeply about drawdown because it measures actual experienced losses. A fund with high returns but extreme drawdowns may trigger investor redemptions at the worst time, creating a death spiral. Many institutional investors have maximum drawdown limits that trigger automatic redemptions or allocation changes.

VaR estimates a loss threshold at a specific confidence level and horizon (e.g., "95% confident daily losses won't exceed $X"). Drawdown measures actual historical peak-to-trough loss. VaR is forward-looking and probabilistic; drawdown is backward-looking and deterministic. Both are valuable: VaR for anticipating risk, drawdown for understanding what actually happened.

Percentage gains and losses are asymmetric. Losing 35% leaves you with 65% of capital. To return to 100%, you need 35/65 = 53.85% of the reduced base. The formula is: Required Gain = Peak/Trough - 1. This asymmetry is why risk management and drawdown control are so important - large losses require disproportionately large gains to recover.

The Calmar ratio divides annualized return by maximum drawdown magnitude. A ratio of 1.0 means return equals drawdown (e.g., 15% return, 15% drawdown). Higher is better. Commonly uses a 36-month lookback period. Named after California Managed Accounts Reports, it helps investors evaluate whether returns adequately compensate for drawdown risk.

Common techniques include stop-loss rules, position sizing limits, volatility targeting, diversification across uncorrelated strategies, liquidity reserves, and contractual drawdown triggers for automatic de-risking. Some funds use dynamic hedging or options strategies to limit tail risk.

No. You supply Peak, Trough, and Current values manually from a drawdown episode you've identified. This is only the "maximum" drawdown if you've identified the worst historical pair. For automated time-series analysis from daily/monthly NAV data, use dedicated portfolio analytics software.
Disclaimer

This calculator is for educational purposes only. You supply Peak, Trough, and Current values manually - this tool does not compute drawdown from time-series data. The result is only the "maximum" drawdown if you've identified the worst historical peak-to-trough pair. This tool should not be used as the sole basis for investment decisions.

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Course by Ryan O'Connell, CFA, FRM

Portfolio Analytics & Risk Management

Master portfolio risk metrics including drawdown analysis, VaR, Sharpe ratio, and more. Build practical skills for hedge fund and asset management roles.

  • Maximum drawdown and Calmar ratio deep dives
  • VaR and Expected Shortfall calculations
  • Sharpe, Sortino, and Information ratios
  • Real-world portfolio analytics in Excel
View Course