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Analysis

VIX

VIX —— 预测标普500波动的水晶球

Jerry Chen
Jerry Chen
Research Strategist
15 June 2020
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上周四,当标普500遭遇3月以来最大单日下跌的同时,波动率指数VIX也自4月份以来首次突破40。

2020年至今,VIX已经上涨139%,今年疫情期间最高触及82,仅次于全球金融危机期间创下的历史最高纪录89。

什么是波动率指数(VIX)

波动率在金融市场中起着相当重要的作用,可以说金融资产的本质就是买卖波动率。最著名的衡量隐含波动率的指标之一就是芝加哥期权交易所(CBOE)的波动率指数(VIX)。

VIX实质上是对标准普尔500指数预期波动幅度的度量,它代表着标普500在接下来的12个月内从当前价格上涨或下跌的预期百分比。举例来讲,如果VIX处于20(%)的水平,则市场预期标普500在接下去12个月内将上涨或下跌20%(61.8%的情况下)。我们还可以通过计算得出单周或者单日的预期波动幅度。

VIX和标普500的关系

当市场动荡不安、充满不确定性的时候,VIX往往会走高,最典型的就是全球金融危机以及今年的新冠疫情期间VIX的飙升。从历史数据观察可以发现,VIX和标普500之间呈现较强的负相关性,即当VIX(绿色)走出阶段新高时,标普500(黑色)往往触底甚至崩盘。这也是为什么VIX又被称为“恐慌指数”。

VIX和标普500 来源:IndexIndicators.com

VIX的交易遥不可及?

VIX本身是无法交易的,投资者可以交易VIX的期货以及期权产品,但这些产品的高门槛和复杂程度让很多投资者望而却步。

不过在Pepperstone,我们现已将近月的VIX期货合约通过公允价值权重调整后为客户提供了一个可交易的VIX指数现货产品。您可以在MT4/5P平台上轻松交易该波动率指数。

VIX指数 来源:MT4

您可以直接交易VIX指数。如果您认为短期内标普500的波动率会因为美国的疫情重燃、国内抗议活动、或大选局势而产生更大的波动,您可以买入VIX。如果您认为美股前景一片向好,波动率将显著降低,则可以卖出VIX。

你还可以通过VIX进行风险管理。如果您拥有股票或股指产品的多头(空头)头寸,您还可以通过买入(卖出)VIX进行一定程度的风险对冲。另外,还可以根据VIX计算出每日的预期波动幅,从而对股指CFD的持仓进行动态且合理的止损设置。


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