Drawdown Management

Drawdown Management

Drawdown management protects capital and ensures trading longevity through loss limits and recovery protocols.

Drawdown Types

Drawdown Policy

Obtain daily, weekly, strategy, and maximum-drawdown limits from the portfolio mandate. Define the equity series (realized plus marked-to-market P&L, fees, funding, deposits/withdrawals), peak reset rule, timezone, and whether open-position stress is added. If no limits exist, propose examples for approval rather than enforcing invented percentages.

Loss Response Protocol

At a limit, block new risk as specified by the mandate and alert the owner. Do not automatically liquidate positions: compare orderly reduction with gap, spread, tax, and hedge consequences. Resume only after the documented cause, data/execution health, model validity, and revised risk budget pass an authorized review—not after an arbitrary pause or number of winning days.

Recovery Math

Larger drawdowns require exponentially larger gains to recover:

Formula: Recovery % = Drawdown / (1 - Drawdown) x 100

This is why preventing large drawdowns matters more than maximizing gains.

Prevention Strategies

1. Size to mandate -- include gap and correlated exposure
2. Enforce approved limits -- block new risk and escalate exactly as documented
3. Manage correlations -- avoid stacking similar positions (see correlation-risk)
4. Reduce in losing streaks -- cut size early, don't wait for the limit
5. Diversify strategies -- single-strategy risk is concentrated risk

Monitoring

Track these metrics continuously:

• Current drawdown from equity peak
• Number of consecutive losing days
• Deviation from the strategy's confidence interval for return and loss distribution
• Equity curve slope (flattening = warning)

Evidence and Validation

• Treat the setup as a testable hypothesis, not a prediction. Define thresholds, entry, invalidation, and exit before evaluating outcomes.
• Calibrate on the same instrument, venue, session, and timeframe. Use closed candles and a held-out or walk-forward sample; record every variant tried.
• Include spread, fees, slippage, borrow or funding, partial fills, and latency. Reject the setup when net expectancy is not positive or depends on one narrow parameter.
• Return observed inputs, missing data, cost assumptions, entry, invalidation, exit, and a valid, watch, or no-trade status.
• Research basis: Risk-constrained Kelly research explicitly trades expected growth against drawdown probability; loss limits should be chosen from mandate and tested distributions, not copied as universal percentages.

Key Rules

• Never add risk to recover a loss unless a preapproved sizing policy independently calls for it.
• Preserve realized/unrealized P&L, cash flows, peak, limit, and response in an immutable audit record.
• Distinguish strategy deterioration, expected variance, concentration, data faults, and execution faults.
• Do not label a drawdown percentage normal without strategy-specific simulations and mandate approval.
• Use forward-looking stress and remaining risk budget, not winning/losing streak folklore, to set size.

Related Skills

• position-sizing -- proper sizing is the primary drawdown prevention tool
• correlation-risk -- correlated positions amplify drawdowns