Joint Industry Plan; Notice of Filing of the Seventeenth Amendment to the National Market System Plan To Address Extraordinary Market Volatility by Cboe BZX Exchange, Inc., Cboe BYX Exchange, Inc., Cboe EDGA Exchange, Inc., Cboe EDGX Exchange, Inc., Chicago Stock Exchange, Inc., Financial Industry Regulatory Authority, Inc., Investors Exchange LLC, NASDAQ BX, Inc., NASDAQ PHLX LLC, The Nasdaq Stock Market LLC, NYSE National, Inc., New York Stock Exchange LLC, NYSE American LLC, and NYSE Arca, Inc.

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83 FR 12432

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“Joint Industry Plan; Notice of Filing of the Seventeenth Amendment to the National Market System Plan To Address Extraordinary Market Volatility by Cboe BZX Exchange, Inc., Cboe BYX Exchange, Inc., Cboe EDGA Exchange, Inc., Cboe EDGX Exchange, Inc., Chicago Stock Exchange, Inc., Financial Industry Regulatory Authority, Inc., Investors Exchange LLC, NASDAQ BX, Inc., NASDAQ PHLX LLC, The Nasdaq Stock Market LLC, NYSE National, Inc., New York Stock Exchange LLC, NYSE American LLC, and NYSE Arca, Inc.,” thefederalregister.org (March 21, 2018), https://thefederalregister.org/documents/2018-05661/joint-industry-plan-notice-of-filing-of-the-seventeenth-amendment-to-the-national-market-system-plan-to-address-extraord.