Federal Register #SR-MIAX-2026-23

SEC Notice: MIAX Proposes Earlier Implementation of Origin Code in AIS Feed

This notice concerns a proposed rule change by Miami International Securities Exchange, LLC (MIAX) regarding the timing of a technical update to its market data feed. - Government Buyer: - Securities and Exchange Commission (SEC) - Miami International Securities Exchange, LLC (MIAX) is the subject of the rule change - OEMs and Vendors: - Miami International Securities Exchange, LLC (MIAX) (only OEM/vendor mentioned) - Products/Services Requested: - No products or services are being procured; this is a regulatory notice - The rule change relates to the provision of origin code in liquidity seeking event notification messages on the Administrative Information Subscriber (AIS) feed - Unique or Notable Requirements: - MIAX proposes to move the implementation date for this technical change from Q4 2026 to Q3 2026 - The Exchange will notify market participants of the actual implementation date at least 30 days in advance via Regulatory Circular - The change is intended to enhance market data and trading transparency - No undue burden on competition is expected

Description

This notice pertains to a proposed rule change by Miami International Securities Exchange, LLC to amend the implementation date for providing origin code in liquidity seeking event notification messages on the Administrative Information Subscriber (AIS) feed. The Exchange initially proposed the change to be implemented in Q4 2026 but now proposes to move the implementation date to Q3 2026 as members have completed necessary technical changes. The Exchange will notify market participants of the actual implementation date at least 30 days prior via a Regulatory Circular. The rule change aims to improve market data and trading transparency without imposing undue burden on competition.

View original listing