Federal Register #SR-MX2-2026-10

MX2 LLC proposal to extend clearly erroneous trade-review rules to overnight trading

The Securities and Exchange Commission published a regulatory notice about MX2 LLC’s proposed changes to overnight trade-review rules. - Government agency: Securities and Exchange Commission (SEC). - Filing organization: MX2 LLC, a self-regulatory organization and exchange. - Proposal: Amend Rule 11.15, which governs reviews of clearly erroneous trades, to extend certain Limit Up-Limit Down (LULD) restrictions into overnight protected hours for 23/5 trading. - Define overnight protected hours and applicable price bands, and apply the relevant overnight percentage parameter. - Set review procedures and numerical guidelines for overnight trades in NMS stocks not covered by the LULD Plan. - Procurement status: This is a regulatory notice, not a procurement or contract award; no products or services are requested.

Description

MX2 LLC filed a proposed rule change to amend Rule 11.15 concerning clearly erroneous executions. The amendments would extend restrictions on clearly erroneous review to overnight protected hours, in light of the SEC’s approval of overnight price bands for 23/5 trading. The proposal also addresses review procedures for transactions in NMS stocks not subject to the LULD Plan during overnight protected hours. The rule change is scheduled to become operative at the commencement of 23/5 trading, scheduled to begin industry-wide on December 6, 2026.

View original listing