MEMX tweaks rules for Texas stock exchange debut.
Published Date: 8/21/2026
Notice
Summary
MEMX is updating its rules to include the Texas Stock Exchange (TXSE) as a new player in how it handles, routes, and executes stock orders. This change started on July 6, 2026, and helps keep everything clear and fair for traders and investors. If you trade stocks through MEMX, this update affects how your orders might be processed, but it doesn’t change any fees or costs.
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
TXSE Added to MEMX Order Data Feeds
MEMX amended Rule 13.4(a) to add the Texas Stock Exchange (TXSE) as a source of market data used for order handling, routing, execution, and related compliance. MEMX will use TXSE market data from the Consolidated Quotation System (CQS) / UTP Quotation Data Feed (UQDF); the rule reflects TXSE operations beginning July 6, 2026 and the change was filed August 12, 2026 and made operative upon filing.
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