# Federal Register #SR-CboeBZX-2026-086

Cboe BZX proposes flexible Start Time instructions for pre-market orders

**Buyer:** Securities and Exchange Commission
**Posted:** November 02, 2026
**Respond By:** November 23, 2026
**Identifier:** SR-CboeBZX-2026-086
**NAICS:** 523210

This SEC notice describes a proposed Cboe BZX rule change, not a government procurement opportunity.
- **Government agency:** Securities and Exchange Commission (SEC), which published the notice; no purchasing agency or procurement office is identified.
- **Organizations named:** Cboe BZX Exchange, Inc. proposed the change; Cboe EDGX Exchange, Inc. is cited as the source of a similar framework.
- **Proposal:** Amend Rule 11.1(a) to allow users to set an optional Start Time, in 30-minute increments, for when eligible pre-market orders may execute.
- **Notable requirements:** The flexible Start Time would replace fixed 4:00 a.m. and 7:00 a.m. start designations while retaining specified order-acceptance restrictions and time-sequenced handling.
- **Procurement items:** No products, services, quantities, or part numbers are requested.

### Description

Cboe BZX Exchange, Inc. proposes to amend Rule 11.1(a) to add an optional Start Time order instruction. The instruction would let users designate, in 30-minute increments before Regular Trading Hours, when an order entered before those hours becomes eligible for execution. The proposal replaces the existing fixed 4:00 a.m. and 7:00 a.m. start designations while retaining specified restrictions on order acceptance. The proposed change is intended to take effect on December 7, 2026.

[View original listing](https://www.federalregister.gov/documents/2026/11/02/2026-22262/self-regulatory-organizations-cboe-bzx-exchange-inc-notice-of-filing-and-immediate-effectiveness-of)