# Federal Register #SR-CboeEDGA-2026-030

SEC notice of Cboe EDGA proposal clarifying trading resumption after a Level 3 market-wide circuit breaker halt

**Buyer:** Securities and Exchange Commission
**Posted:** October 08, 2026
**Respond By:** October 29, 2026
**Identifier:** SR-CboeEDGA-2026-030

The SEC published a notice about a proposed Cboe EDGA trading-rule clarification, not a procurement opportunity.
- **Government agency:** Securities and Exchange Commission (SEC).
- **Proposal:** Cboe EDGA Exchange, Inc. (EDGA) would amend Rule 11.23(b)(2) to clarify that trading remains halted after a Level 3 market-wide circuit breaker until 4:00 a.m. ET or later on the following trading day.
- **Purpose:** Preserve existing resumption timing and promote consistent rules as exchanges move toward 23-hours-per-day, five-days-per-week trading. The proposal does not substantively change the circuit breaker mechanism.
- **Other named organizations:** Cboe EDGX Exchange, Inc. (EDGX), other U.S. equity exchanges, and FINRA.
- **Procurement:** No products or services, OEMs, quantities, or contract value are identified.

### Description

Cboe EDGA Exchange, Inc. proposes to amend Rule 11.23(b)(2), concerning trading resumption after a Level 3 market-wide circuit breaker halt, in connection with the industry's planned expansion to 23-hour-per-day, 5-day-per-week trading. The proposed change would provide that trading in all stocks remains halted until 4:00 a.m. ET or later on the following trading day, rather than resuming when overnight trading begins. The notice states that the change is intended to preserve the current resumption timing and coordinate a consistent approach across self-regulatory organizations. The proposal does not intend to make substantive changes to the market-wide circuit breaker mechanism.

[View original listing](https://www.federalregister.gov/documents/2026/10/08/2026-20602/self-regulatory-organizations-cboe-edga-exchange-inc-notice-of-filing-and-immediate-effectiveness-of)