Proposed Rule Change to Adopt FINRA Rule 6121 (Trading Halts Due to Extraordinary Market Volatility)

Financial Industry Regulatory Authority, Inc. ("FINRA") (f/k/a National Association of Securities Dealers, Inc. ("NASD")) is filing with the Securities and Exchange Commission ("SEC" or "Commission") a proposed rule change to adopt FINRA Rule 6121 (Trading Halts Due to Extraordinary Market Volatility) to permit FINRA to halt over-the-counter ("OTC") trading in NMS stocks, as defined in Rule 600(b)(47) of SEC Regulation NMS, if other major U.S. securities markets initiate market-wide trading halts in response to extraordinary market conditions.