V2EX omega ratio

Omega Ratio

释义 Definition

Omega比率:一种用于评价投资表现的指标,比较在某个阈值回报(minimum acceptable return, MAR)之上获得的“收益”与该阈值之下承受的“损失”。它能同时考虑收益与下行风险,常用于基金、策略或资产的绩效评估。(在金融语境最常见;“omega”在其他领域也有别的含义。)

发音 Pronunciation (IPA)

/ome reio/

例句 Examples

The omega ratio of this fund is higher than its peers.
这只基金的Omega比率高于同类产品。

When we set the threshold return at 2%, the strategy’s omega ratio improves, suggesting its returns contain more gains above the target relative to losses below it.
当我们把阈值回报设为2%时,该策略的Omega比率上升,说明相对于低于目标的亏损,它在目标之上的收益占比更高。

词源 Etymology

Omega 源自希腊字母 Ω(omega),常用来表示“最终/末端”或作为符号使用;ratio 来自拉丁语 ratio,意为“计算、比例”。在金融中,“Omega ratio”作为术语由研究者提出,用来把“超过某个目标的收益”与“低于该目标的损失”以比例形式综合表达。

相关词 Related Words

文学与著作 Literary Works

  • Keating, Con & Shadwick, William F. “A Universal Performance Measure”(提出并系统阐述Omega比率的经典论文,2002)
  • Bacon, Carl R. Practical Portfolio Performance Measurement and Attribution(投资绩效度量书籍中常提及Omega等比率指标)
  • Jorion, Philippe. Value at Risk: The New Benchmark for Managing Financial Risk(风险度量语境中常与多种绩效/风险指标并列讨论,部分版本与相关文献会提到Omega比率)
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