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, a widely watched measure of market volatility that is often referred to as the 'fear index, ' shot up to its highest level since late 2002.

广受关注的的VIX市场波动指数--常常被称为“恐慌指数”--也达到2002年以来的最高水平。

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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 volatility or fear index, as measured by the CBOE Volatility Index (VIX), is over 33, and has remained over 30 since the beginning of August, when the American debt issues and worries about Greece really started to reemerge in the market place.

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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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