Proposed Rule Change to Amend FINRA Rule 6191 to Modify the Quoting and Trading Requirements Relating to the Block Size Exception and the Use of Intermarket Sweep Orders and Trade-at Intermarket Sweep Orders

Financial Industry Regulatory Authority, Inc. (“FINRA”) is filing with the Securities and Exchange Commission (“SEC” or “Commission”) a proposed rule change to amend FINRA Rule 6191 (Compliance with Regulation NMS Plan to Implement a Tick Size Pilot Program) to modify the quoting and trading requirements relating to the block size exception and the use of Intermarket Sweep Orders (“ISOs”) and Trade-at Intermarket Sweep Orders (“TAISOs”).