L2.1 — Understanding Drawdown: Peak-to-Trough Equity Decline
A drawdown is the percentage decline from the highest equity point to the current equity level. A 10% drawdown means your account is currently 10% below its peak. Drawdown is not just a performance metric — it is a psychological force. A 10% drawdown at consistent 1% risk took approximately 10 consecutive losses to produce. That is a losing streak within the normal statistical range for most strategies.
The mathematics of recovery make drawdown asymmetric and dangerous. A 10% drawdown requires an 11.1% gain to recover. A 20% drawdown requires a 25% gain. A 50% drawdown requires a 100% gain. This is why limiting drawdown is not conservative — it is mathematically essential to long-term capital preservation.
Every serious trader needs a maximum drawdown threshold: the level at which they stop trading, review everything, and do not return to live trading until the issues are identified. This threshold is not set reactively after a bad streak — it is defined in advance, in writing, before any losing streak occurs.
Get notified when new lessons and content are published.