Comments on IEX Rulemaking

Self-Regulatory Organizations; Investors Exchange LLC; Notice of Filing and Immediate Effectiveness of Proposed Rule Change to Amend IEX Rule 11.190(g) to Add a Quote Imbalance Indicator

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Date Received
Date Letter Type Commenter Name
Meeting with SEC Officials Memorandum from the Division of Trading and Markets regarding a July 30, 2025 meeting with representatives of MEMX LLC
Public Comment John Ramsay, Chief Market Policy Officer, Investors Exchange LLC
Public Comment Adrian Griffiths, Head of Market Structure, MEMX LLC

Last Reviewed or Updated: Dec. 18, 2025

File Number
SR-IEX-2025-11
Release Number
34-103318
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