Federal Register #SR-MEMX-2026-26

SEC Notice of Proposed Rule Change by MEMX LLC to Amend Rule 13.4(a) for TXSE Exchange Operation

This notice concerns a proposed rule change by MEMX LLC, published by the Securities and Exchange Commission (SEC). - Government buyer: - Securities and Exchange Commission (SEC) - Key organizations: - MEMX LLC - Texas Stock Exchange LLC (TXSE Exchange) - Purpose: - Amendment of Rule 13.4(a) to reflect TXSE Exchange's operation as a registered national securities exchange - Update to public disclosure of market data sources used by MEMX for order handling, routing, execution, and compliance - Inclusion of TXSE Exchange market data from the Consolidated Quotation System (CQS)/UTP Quotation Data Feed (UQDF) - Notable requirements: - Regulatory update; no procurement of products or services - No purchase quantities, part numbers, or OEMs involved - This notice is informational and regulatory, not a procurement opportunity.

Description

The Securities and Exchange Commission (SEC) has filed a notice regarding a proposed rule change by MEMX LLC. The rule change involves amending Rule 13.4(a) to reflect the operation of the TXSE Exchange as a registered national securities exchange. The amendment updates the public disclosure of data sources used for order handling, routing, execution, and related compliance processes. The notice was published in the Federal Register on August 21, 2026.

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