Skip to search field Skip to main content

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Self-Regulatory Organizations; Nasdaq PHLX LLC; Notice of Filing of Proposed Rule Change to Amend Equity 4, Rules 3301A and 3301B to Establish New “Contra Midpoint Only” and “Contra Midpoint Only with Post-Only” Order Types and to Make Other Corresponding Changes to the Rulebook

Filter comments


Date Sort descending	Letter Type	Commenter Name
Jan. 3, 2024	Public Comment	Joseph Saluzzi, Partner, Themis Trading LLC
Jan. 2, 2024	Public Comment	John Ramsay, Chief Market Policy Officer, Investors Exchange LLC
Dec. 29, 2023	Public Comment	R. T. Leuchtkafer
Nov. 17, 2023	Public Comment	Joanna Mallers, Secretary, FIA Principal Traders Group
Nov. 2, 2023	Public Comment	Brett Kitt, Associate Vice President and Principal Associate General Counsel, Nasdaq, Inc.
Sept. 29, 2023	Public Comment	Joseph Saluzzi, Partner, Themis Trading LLC
Sept. 28, 2023	Public Comment	John Ramsay, Chief Market Policy Officer, Investors Exchange LLC

Last Reviewed or Updated: Dec. 18, 2025

File Number

SR-PHLX-2023-40

Release Number

34-98280

How to submit comments