performance_analytics.max_drawdown
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spice.performance_analytics.max_drawdown(returns_timeseries: Series) -> float | None

   Calculates maximum drawdown using daily returns timeseries

   Parameters:
      **returns_timeseries** -- Series with return values indexed by
      date(datetime format)

   Returns:
      Maximum drawdown as decimal, negative value, or None if
      insufficient data

   Return type:
      float
