Federal Register #SR-PHLX-2026-51

SEC Notice of Proposed Rule Change by Nasdaq PHLX LLC to Amend Trading Halt Procedures

This notice from the Securities and Exchange Commission (SEC) concerns a proposed rule change by Nasdaq PHLX LLC regarding trading halt procedures. - Government buyer: - Securities and Exchange Commission (SEC) - Nasdaq PHLX LLC (regulated entity submitting the rule change) - No OEMs or commercial vendors are involved; this is a regulatory action, not a procurement. - No products or services are requested; the notice pertains to amendments in trading halt rules. - Key details of the rule change: - Amends Equity 4, Rule 3100 to update trading halt procedures - Incorporates CORE FIX protocols into Limit Up-Limit Down provisions - Makes conforming changes to related rules (Equity 4, Rules 3301A and 3312) - Aims to promote clarity, consistency, and transparency for market participants - Supports coordinated implementation of uniform cross-market halt procedures - No purchase quantities, part numbers, or procurement requirements are provided.

Description

The Securities and Exchange Commission has published a notice regarding a proposed rule change by Nasdaq PHLX LLC. The rule change pertains to amendments to Equity 4, Rule 3100 concerning trading halts. The notice indicates that the proposed rule change has been filed and is effective immediately. The amendment updates the previously approved but not yet operative rule text to reflect intervening changes and makes related conforming changes to other rules referencing Rule 3100. The purpose is to promote clarity, consistency, and transparency for market participants and to support coordinated implementation of uniform cross-market halt procedures.

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