Self-Regulatory Organizations; MEMX LLC; Notice of Filing of a Proposed Rule Change to Establish Fees for Industry Members Related to Certain Historical Costs of the National Market System Plan Governing the Consolidated Audit Trail; Suspension of and Order Instituting Proceedings to Determine Whether to Approve or Disapprove the Proposed Rule Change

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Date Received
Date Letter Type Commenter Name
Public Comment Brandon Becker, CAT NMS Plan Operating Committee Chair, Consolidated Audit Trail, LLC
Public Comment Joanna Mallers, Secretary, FIA Principal Traders Group
Public Comment Ellen Greene, Managing Director, Equities & Options Market Structure, SIFMA; Joseph Corcoran, Managing Director, Associate General Counsel, SIFMA
Public Comment Stephen John Berger, Managing Director, Global Head of Government and Regulatory Policy, Citadel Securities
Public Comment Thomas Merritt, Deputy General Counsel, Virtu Financial

Last Reviewed or Updated: Dec. 18, 2025

File Number
SR-MEMX-2024-01
Release Number
34-99356
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