# Federal Register #SR-CBOE-2026-078

Cboe Exchange Proposed Rules for Global and Curb Trading Sessions

**Buyer:** Securities and Exchange Commission
**Posted:** October 13, 2026
**Identifier:** SR-CBOE-2026-078

The Securities and Exchange Commission (SEC) notice concerns proposed changes by Cboe Exchange, Inc. to trading-session rules; it does not describe a procurement opportunity.
- Government agency: Securities and Exchange Commission (SEC); no sub-agency or office is identified.
- Proponent: Cboe Exchange, Inc. The notice does not identify any OEMs, resellers, or other vendors supplying products or services.
- Proposed rule changes cover Global Trading Hours (GTH) and Curb Trading Hours sessions:
  - Add “GTH Only” and “GTH and RTH Only” order instructions.
  - Revise when pre-opening order queuing and order entry may begin.
  - Clarify Curb-session treatment on shortened trading days.
  - Adjust designated primary market-maker responsibilities.
- No products, services, part numbers, quantities, contract value, or performance period are specified.

### Description

Cboe Exchange, Inc. proposes amendments to its rules governing Global Trading Hours (GTH) and Curb Trading Hours sessions. The proposed changes include new order instructions for specifying eligible trading-session combinations and adjustments to the timing of pre-opening order queuing and entry for options. The notice also describes changes concerning Curb trading on shortened regular trading hours sessions and designated primary market-maker responsibilities. The Securities and Exchange Commission published the notice to solicit comments on the proposed rule change.

[View original listing](https://www.federalregister.gov/documents/2026/10/13/2026-20795/self-regulatory-organizations-cboe-exchange-inc-notice-of-filing-and-immediate-effectiveness-of-a)