30-Minute VIX Frenzy Exposes Obsession With Volatility HedgingBy
On Aug. 24, the VIX didn't open for almost a half hour
The gauge jumped as much as 90 percent for a record increase
Among the many scary things traders witnessed as stocks plunged last Monday, one of the most harrowing was the sight of the VIX, an index designed to measure investor fear, briefly going dark.
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