Federal Register #SR-CBOE-2026-078

Cboe Exchange Proposed Rules for Global and Curb Trading Sessions

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.

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