Comments on C2 Options Exchange Rulemaking

Order Instituting Proceedings to Determine Whether to Disapprove Proposed Rule Changes Relating to Trading Halts Due to Extraordinary Market Volatility
Notice of Filing of Proposed Rule Change Related to Market-Wide Circuit Breakers

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Date Received
Date Letter Type Release Number Commenter Name
Public Comment 34-66065 Ann L. Vlcek, Managing Director and Associate General Counsel, Securities Industry and Financial Markets Association
Public Comment 34-66065 Craig S. Donohue, Chief Executive Officer, CME Group Inc.
Public Comment 34-66065 Timothy Quast, Managing Director, ModernIR
Public Comment 34-65437, 34-65428, 34-65429, 34-65433, 34-65438, 34-65426, 34-65431, 34-65440, 34-65430, 34-65425, 34-65435, 34-65436, 34-65427, 34-65436, 34-65439, 34-65434 Ann L. Vlcek, Managing Director and Associate General Counsel, Securities Industry and Financial Markets Association
Public Comment 34-65437, 34-65428, 34-65429, 34-65433, 34-65438, 34-65426, 34-65431, 34-65440, 34-65430, 34-65425, 34-65435, 34-65436, 34-65427, 34-65436, 34-65439, 34-65434 Craig S. Donohue, Chief Executive Officer, CME Group Inc.
Public Comment 34-65437, 34-65428, 34-65429, 34-65433, 34-65438, 34-65426, 34-65431, 34-65440, 34-65430, 34-65425, 34-65435, 34-65436, 34-65427, 34-65436, 34-65439, 34-65434 James J. Angel, Ph.D., CFA, Associate Professor of Finance, Georgetown University, Washington, D.C.
Public Comment 34-65437, 34-65428, 34-65429, 34-65433, 34-65438, 34-65426, 34-65431, 34-65440, 34-65430, 34-65425, 34-65435, 34-65436, 34-65427, 34-65436, 34-65439, 34-65434 Richard H. Baker, President and CEO, Managed Funds Association

Last Reviewed or Updated: Dec. 18, 2025

File Number
SR-C2-2011-024
Release Number
34-66065
34-65433
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