2 Sep 2025
📈SEC Encourages Compliance with New Round Lot Definition for Trading
Self-Regulatory Organizations; MIAX PEARL, LLC; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend Exchange Rules To Conform With Recent Amendments to the Definition of Round Lot Under Rule 600 of Regulation NMS
Summary
MIAX Pearl LLC has filed a proposed rule change to amend Exchange Rule 2610, aligning the definition of "round lot" with updated standards from Regulation NMS. This change will be implemented on November 3, 2025, promoting clarity and compliance in trading practices across various securities.
Agencies
- Securities and Exchange Commission
Business Impact
$$ - Med
The proposed rule changes by MIAX Pearl conform to the updated definition of "round lot" under Rule 600 of Regulation NMS, affecting how trades may be executed for stocks across various price ranges. This impacts trading strategies, compliance requirements, and operational adjustments for business owners and exchanges regarding execution standards and market participation.