定价
绩效指标
风险调整收益

Serenity Ratio

Definition

Serenity Ratio是一种风险调整指标,综合收益、回撤和波动率来评估投资的稳定性和可持续性,提供风险调整效率的综合衡量标准。

Formula

Serenity Ratio=RpRfUlcer Index×Pitfall\text{Serenity Ratio}=\frac{R_p - R_f}{\text{Ulcer Index} \times \text{Pitfall}}

Where:

  • RpR_p = Portfolio return
  • RfR_f = Risk-free rate
  • Ulcer Index = Quadratic mean of the drawdowns (depth and duration of drawdowns)
  • Pitfall = CDaRσp\frac{\text{CDaR}}{\sigma_p}, the extreme-risk penalty
  • CDaR = Conditional Drawdown at Risk (the CVaR of the drawdown distribution)
  • σp\sigma_p = Standard deviation of portfolio returns

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Serenity Ratio Definition & Formula · PortfolioMetrics