Drawdown (economics)
（重定向自Maximum Drawdown）
The drawdown is the measure of the decline from a historical peak in some variable (typically the cumulative profit or total open equity of a financial trading strategy).
Somewhat more formally, if ![X = (X(t), t \ge 0)](/Images/godic/202501/26/09093fb5f358aa1337ee8345f553524c5343.png")
is a random process with X(0) = 0, the drawdown at time T, denoted ![D(T)](/Images/godic/202501/26/1f27565bb2699ada2c7c6cc7c81d14365343.png")
,
is defined as