Information Circulars

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March 27, 2015:   IC15-018 Trader E-News 
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March 13, 2015:   IC15-017 Trader E-News 
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March 12, 2015:   IC15-016 Indicative (Spot) Values for 30-Day Volatility Indexes Calculated Solely Using PM-Settled Options 
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March 10, 2015:   IC15-015 Good Friday Holiday Closure Impact on Trading Schedule 
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March 06, 2015:   IC15-014 Trader E-News 
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February 27, 2015:   IC15-013 Trader E-News 
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February 24, 2015:   IC15-012 Informational Session for CBOE Floor Broker Trading Permit Holders 
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February 23, 2015:   IC15-011 Extended Trading Hours - PULSe Trader Workstation Access 
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February 20, 2015:   IC15-010 Trader E-News 
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February 20, 2015:   IC15-009 CBOE VIX Indicative Bid Index (VWB) and CBOE VIX Indicative Ask Index (VWA) to Include SPX Weeklys Beginning February 23, 2015 
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