Cboe EDGX adopts fee credit program for backup logical ports
The rule, effective immediately, grants member firms credit for redundant logical-port fees during exchange-initiated order-entry protocol migrations.

On August 20, 2026 Cboe EDGX Exchange, Inc. filed a proposed rule change (Release No. 34-106223; File No. SR-CboeEDGX-2026-055) to amend its fee schedule. The Securities and Exchange Commission published the notice on August 28, 2026 (FR Doc No. 2026-17910, Vol. 91, No. 169, pp. 56489-56491) and declared the amendment immediately effective.
The amendment creates an Exchange Order Entry Protocol Migration Program. When the Exchange initiates a migration from an older BOE logical-port protocol (e.g., BOEv2) to a newer one (BOEv3), a member may establish a redundant logical port solely as a backup. The member must notify the Exchange's Trade Desk, cancel the redundant port within 30 calendar days, and request a credit within 30 days after cancellation.
If the Exchange confirms that the redundant port was used only for orders or quotes caused by an Exchange issue related to the migration, the monthly logical-port fee assessed for that port will be credited to the member's invoice for the subsequent billing cycle.
The Exchange states the program is consistent with Section 6(b)(5) of the Securities Exchange Act of 1934, aiming to prevent unfair discrimination and to protect investors by removing fees tied to an Exchange-driven operational change.
The notice invites comments from interested persons during the comment period, as required by Section 19(b)(1) of the Act and Rule 19b-4.
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