Proposed Rule Change to Extend the Implementation Date of Certain Amendments to FINRA Rule 4210 Approved Pursuant to SR-FINRA-2015-036

Financial Industry Regulatory Authority, Inc. (“FINRA”) is filing with the Securities and Exchange Commission (“SEC” or “Commission”) a proposed rule change to extend, to March 25, 2019, the implementation date of the amendments to FINRA Rule 4210 (Margin Requirements) pursuant to SR-FINRA-2015-036, other than the amendments pursuant to SR-FINRA-2015-036 that were implemented on December 15, 2016.