Federal Register #SR-CboeBYX-2026-035

Cboe BYX proposal to revise clearly erroneous execution reviews for overnight trading

Cboe BYX Exchange, Inc. has proposed changes to its clearly erroneous executions rule for overnight trading. - Government agency: Securities and Exchange Commission (SEC), which published the notice. - Filing entity: Cboe BYX Exchange, Inc.; the proposal concerns BYX Rule 11.17, Clearly Erroneous Executions. - Proposed changes: Extend certain review restrictions to Overnight Protected Hours when Overnight Price Bands apply, and update procedures and numerical guidelines for stocks not covered by the Limit Up-Limit Down (LULD) Plan during those hours. - Purpose: Align clearly erroneous execution reviews with overnight price-band protections and support consistency for 23/5 trading. - Procurement status: This is a regulatory notice, not a solicitation or award. No products, services, quantities, part numbers, OEMs, or suppliers are identified.

Description

Cboe BYX Exchange, Inc. proposes to amend Rule 11.17, governing Clearly Erroneous Executions, following the SEC’s approval of Overnight Protected Bands under the Limit Up-Limit Down Plan for 23/5 trading. The proposal would extend restrictions on clearly erroneous review to transactions executed during Overnight Protected Hours when Overnight Price Bands apply. It also addresses review procedures and numerical guidelines for transactions in stocks not subject to the LULD Plan during those hours. The proposed changes are scheduled to become operative when 23/5 trading begins, scheduled industry-wide for December 6, 2026.

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