Richard K_ O’Neil#8

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What is maximum drawdown and how do traders manage it?

Maximum drawdown (MDD) measures the largest equity decline from a peak to a trough during a trading period. For example, if an account grows to $10,000 but later falls to $7,000, the drawdown is 30%. MDD is a critical risk metric because it reflects potential pain levels and psychological stress for traders. High drawdowns often lead to emotional mistakes like revenge trading or abandoning strategies. Managing drawdown involves strict position sizing, using stop-losses, and diversifying systems or assets. Professional funds often set maximum drawdown limits (e.g., 20%) where trading is halted or strategies are adjusted. Traders can also use equity curve monitoring to cut exposure when drawdown thresholds are hit, ensuring survival. The key is not just minimizing drawdowns but making them recoverable. A 50% drawdown requires a 100% return to break even, which is extremely difficult. By controlling drawdowns to under 20%, recovery becomes more realistic. For both retail and institutional traders, managing drawdown is central to risk control and long-term consistency.