Cboe BYX Integrates 24X Exchange into Trading Rules
Published Date: 9/30/2025
Notice
Summary
Cboe BYX Exchange is updating a rule to include a new stock exchange called 24X, which will start operating on September 29, 2025. This change affects how BYX shares info about the data it uses for handling and routing orders, making everything clearer and up-to-date. No extra costs or delays are expected, and the update kicks in right away!
Analyzed Economic Effects
2 provisions identified: 2 benefits, 0 costs, 0 mixed.
BYX Adds 24X Market Data Feed
Cboe BYX updated Exchange Rule 11.26(a) to state that it will utilize 24X Exchange market data from the Consolidated Quotation System (CQS)/UTP Quotation Data Feed (UQDF) for order handling, routing, execution, and related compliance processes. The change is intended to reflect 24X Exchange's planned operation beginning September 29, 2025.
Rule Change Effective Immediately
The Commission waived the usual 30-day operative delay and designated BYX's proposed amendment to Rule 11.26(a) operative upon filing (filed September 22, 2025), allowing the disclosure to take effect immediately. The rule change was filed to reflect 24X Exchange's planned launch on September 29, 2025.
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