Exclusive: Trading in VIX options froze after open - CBOE

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CBOE HLDGS (NYSE: CBOE) Delayed: 268.07 +0.22 (0.08%)
Previous Close $267.85    52 Week High $72.53 
Open $270.69    52 Week Low $58.43 
Day High $270.77    P/E 134.71 
Day Low $263.39    EPS $1.99 
Volume 812,570