SEC Extends Review Deadline for CME Securities Clearing Cross-Margin Rule Change

On October 7, 2026, the Securities and Exchange Commission designated a longer period for action on CME Securities Clearing Inc.'s proposed rule change SR-CMESC-2026-007. The filing, submitted on August 18, 2026, was published for comment on August 31, 2026, and the Commission now must approve, disapprove, or commence disapproval proceedings by November 29, 2026.

Section 19(b)(2)(i) of the Exchange Act requires the Commission to act within 45 days of a notice of filing, which would have fallen on October 15, 2026. Under Section 19(b)(2)(ii), the Commission may extend that window up to 90 days. Finding the extension appropriate, the Commission exercised that authority and set the new deadline at November 29, 2026.

The proposed rule change seeks to adopt standards for establishing cross-margin arrangements and to implement a cross-margin arrangement with Chicago Mercantile Exchange Inc. It also calls for amendments to the CMESC Rulebook and related clearing risk-management policies.

Comments on the proposal are publicly available at https://www.sec.gov/rules-regulations/public-comments/sr-cmesc-2026-007. The extension provides additional time for the Commission to consider those comments before reaching a final decision.

The designation appears in Federal Register Volume 91, Number 196, pages 64995-64996, filed on October 9, 2026, under Release No. 34-106619 and FR Doc No. 2026-20794. The action was taken by the Division of Trading and Markets pursuant to delegated authority under 17 CFR 200.30-3(a)(12).