Please be advised and pursuant to CH Advisory 25-046 and CH Advisory 25-068, 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; with the IDs being unique across CME Clearing. Phase 3 will now be targeted for Q3 2026.

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

CME Group is the world’s leading derivatives marketplace. The company is comprised of four Designated Contract Markets (DCMs). 
Further information on each exchange's rules and product listings can be found by clicking on the links to CME, CBOT, NYMEX and COMEX.

© 2026 CME Group Inc. All rights reserved.