Federal Register #SR-CboeBZX-2026-077

SEC notice of proposed Cboe BZX rule change for trading resumption after a market-wide halt

This SEC notice concerns a proposed Cboe BZX trading rule change, not a government procurement opportunity. - Government agency: U.S. Securities and Exchange Commission (SEC). - Filing organization: Cboe BZX Exchange, Inc.; no procuring agency, sub-agency, or purchasing office is identified. - Proposed change: Amend Cboe BZX Rule 11.30 so that after a Level 3 market-wide circuit breaker halt, trading remains halted until 4:00 a.m. ET or later on the following trading day, including during any expanded overnight trading hours. - Purpose: Preserve the existing cooling-off period, support price discovery, and maintain consistent rules across U.S. securities markets. - Trading plans: Cboe BZX states it does not currently intend to implement 23-hours-per-day, five-days-per-week trading. - Procurement details: No products or services, quantities, part numbers, contract value, or period of performance are specified.

Description

Cboe BZX Exchange, Inc. filed a proposed amendment to Rule 11.30 concerning trading resumption after a Level 3 market-wide circuit breaker halt. The change would specify that trading in all stocks on the Exchange remains halted until 4:00 a.m. ET or later on the following trading day, including after the introduction of overnight trading under the industry’s planned 23-hours-per-day, five-days-per-week schedule. The filing states that the change is intended to preserve the existing resumption time and maintain a cooling-off period and coordinated market rules. The Exchange says it does not intend to implement 23/5 Trading at this time.

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