Please be advised and pursuant to CH Advisory 25-311, CME Clearing will transition the updated Clearing Trade, Allocation Group, and Allocation IDs, currently from up to 10 numeric digits, to up to 52 alphanumeric character IDs instead; starting with around 26 characters, increasing over time up to 52 characters, with the IDs being unique across CME Clearing for a given Business Date.

Phase 3 will be the final phase of the Project.

New Production Date: Trade Date Monday, December 07, 2026

For the full text of this advisory, please click the link below.