# Federal Register #SR-CboeBZX-2026-079

SEC Notice on Cboe BZX Exchange’s Proposed Overnight Trading Rule Changes

**Buyer:** Securities and Exchange Commission
**Posted:** October 13, 2026
**Respond By:** November 03, 2026
**Identifier:** SR-CboeBZX-2026-079
**NAICS:** 523210

The U.S. Securities and Exchange Commission notice concerns a proposed Cboe BZX Exchange rule change, not a purchase of products or services.
- **Government agency:** U.S. Securities and Exchange Commission (SEC), which published the notice; no government buyer or purchasing office is identified.
- **Proposing organization:** Cboe BZX Exchange, Inc.
- **Proposal:** Amend Exchange Rule 11.17, governing clearly erroneous executions, to extend relevant review restrictions and procedures to overnight trading periods protected by Overnight Price Bands.
- **Related changes:** Update definitions and percentage parameters, and revise provisions for transactions in securities not subject to the Limit Up-Limit Down (LULD) Plan.
- **Procurement details:** No products, services, quantities, part numbers, contract value, or period of performance are identified.

### Description

Cboe BZX Exchange, Inc. proposes to amend Rule 11.17, which addresses clearly erroneous executions, following SEC approval of Overnight Protected Bands for 23/5 trading. The amendments would extend relevant limits and review procedures to overnight trading hours and update related rule definitions and provisions. The change is proposed to become operative when 23/5 trading is scheduled to begin industry-wide on December 6, 2026. Comments are due November 3, 2026.

[View original listing](https://www.federalregister.gov/documents/2026/10/13/2026-20797/self-regulatory-organizations-cboe-bzx-exchange-inc-notice-of-filing-and-immediate-effectiveness-of)