Notice of Designation of Longer Period for Commission Action on Proposed Rule Change, as Modified by Partial Amendment no. 1, by the Options Clearing Corporation Concerning Its Process for Adjusting Certain Parameters in Its Proprietary System for Calcula

Notice of Designation of Longer Period for Commission Action on Proposed Rule Change, as Modified by Partial Amendment no. 1, by the Options Clearing Corporation Concerning Its Process for Adjusting Certain Parameters in Its Proprietary System for Calculating Margin Requirements During Periods When the Products It Clears and the Markets It Serves Experience High Volatility