Regulatory Circulars

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April 25, 2017:   RG17-065 SPX/SPXW Quoting Bandwidth Increase 
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April 25, 2017:   RG17-064 PULSe Trader Workstation Enhancement Release 4.4.0 
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April 24, 2017:   RG17-063 April 2017 Compression Forums 
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April 21, 2017:   RG17-062 SPX/SPXW Quoting Bandwidth Increase 
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April 20, 2017:   RG17-061 Restrictions on Transactions in Adeptus Health Inc. (ADPT) 
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April 19, 2017:   RG17-060 Extension of Expirations for SPXW Monday and Wednesday Expiring Weekly Options 
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April 17, 2017:   RG17-059 Appointment of Timber Hill LLC as Off-Floor DPM 
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April 17, 2017:   RG17-058 Quarterly Rebalance of Option Class Tiers and Online Appointment System Reminder 
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April 13, 2017:   RG17-057 CBOE Rule 6.25 and C2 Rule 6.15 
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April 11, 2017:   RG17-055 Restrictions on Transactions in Gulfmark Offshore Inc. (GLF) 
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