Exclusive: Trading in VIX options froze after open - CBOE

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CBOE HLDGS (NYSE: CBOE) Delayed: 275.29 +13.54 (5.17%)
Previous Close $261.75    52 Week High $72.53 
Open $263.12    52 Week Low $58.43 
Day High $278.34    P/E 138.34 
Day Low $263.11    EPS $1.99 
Volume 2,288,165