The clearest measure of recent investor uncertainty is the VIX or volatility index, traded on the Chicago Board Options Exchange.

最近度量投资者们对市场的不确定性的最好方法是看看VIX即波动率指数，在芝加哥期权交易所交易。

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The Vix, or volatility index, a measure of market preparedness for shocks, has been lower than in past peaks—though it shot up on September 17th.

衡量市场对意外冲击是否有所准备的波动指数VIX尽管在9月17日暴涨，仍然低于之前的峰值。

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The Vix, or volatility index, a measure of market preparedness for shocks, has been lower than in past peaks-though it shot up on September 17th.

衡量市场对意外冲击是否有所准备的波动指数VIX尽管在9月17日暴涨，仍然低于之前的峰值。

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Option volume on the CBOE Volatility Index (VIX) once again reversed sharply on Thursday.

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Finally, put volume also spiked on the CBOE Market Volatility Index ( VIX) on Thursday.

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The CBOE Market Volatility Index (VIX) closed below the significant 16 level on Friday.

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