6121. Trading Halts Due to Extraordinary Market Volatility
Pursuant to the procedures set forth in Rule 6120(b), FINRA shall halt all trading otherwise than on an exchange in any NMS stock, as defined in Rule 600(b)(47) of SEC Regulation NMS, if other major securities markets initiate market-wide trading halts in response to their rules or extraordinary market conditions or if otherwise directed by the Securities and Exchange Commission.