U.S. Fear Index Surges 52% After U.K. Votes to Leave EU: Chart

U.S. equity investors will wake up to face the most turbulent day since last August’s market slump. The Chicago Board Options Exchange Volatility Index jumped as much as 52 percent in the early hours of trading after Britons voted to leave the European Union. As of 6:18 a.m. in New York, the VIX was 39 percent higher.

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