On June 5, 2026, Cboe BYX Exchange, Inc. (“BYX”) filed with the Securities and Exchange Commission (“Commission”), pursuant to Section 19(b)(1) of the Securities Exchange Act of 1934 (“Act”) ^[1] and Rule 19b-4 thereunder,^[2] a proposed rule change (a) to amend Rule 11.9(d) to: (i) permit an Intermarket Sweep Order to be entered as a Non-Displayed Order and (ii) to establish the price level at which the System will consider an Intermarket Sweep Order available for other orders to be entered and (b) to amend Rule 11.9(g)(4) to permit Non-Displayed Orders to re-price to more aggressive prices. The proposed rule change was published for comment in the Federal Register on June 23, 2026.^[3]

Section 19(b)(2) of the Act ^[4] provides that within 45 days of the publication of notice of the filing of a proposed rule change, or within such longer period up to 90 days as the Commission may designate if it finds such longer period to be appropriate and publishes its reasons for so finding or as to which the self-regulatory organization consents, the Commission shall either approve the proposed rule change, disapprove the proposed rule change, or institute ( printed page 47284) proceedings to determine whether the proposed rule change should be disapproved. The 45th day after publication of the notice for this proposed rule change is August 7, 2026. The Commission is extending this 45-day time period.

The Commission finds it appropriate to designate a longer period within which to take action on the proposed rule change so that it has sufficient time to consider the proposed rule change and the issues raised therein. Accordingly, the Commission, pursuant to Section 19(b)(2) of the Act,^[5] designates September 21, 2026, as the date by which the Commission shall either approve or disapprove, or institute proceedings to determine whether to disapprove, the proposed rule change (File No. SR-CboeBYX-2026-026).