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Comments on CHX Rulemaking

Notice of Filing of Proposed Rule Change to Amend Article 20, Rule 9 (Cancellation of Transactions) and Interpretation and Policy .01 Thereunder Regarding the Cancellation of the Stock Leg of Stock-Option Transactions Done on the Exchange

[Release No. 34-64985; File No. SR-CHX-2011-21]

Aug. 23, 2011 Stephen Floirendo, Philadelphia, Pennsylvania
Aug. 23, 2011 Nick DiCicco, D and D Securities
Jul. 28, 2011 Darren Story, CFA, Student Options, LLC, San Francisco, California
Jul. 28, 2011 Michael Bristow




Modified: 08/24/2011