CME Group to launch CME Securities Clearing on December 7

CME Group announced on December 2, 2025, that it received SEC registration for CME Securities Clearing Inc. (CMESC), a brand-new clearing house designed to handle US Treasury cash and repo transactions. The registration became effective around December 1, and the entity is set to formally launch on December 7.

This is the first real competition the Fixed Income Clearing Corporation (FICC) has faced in the Treasury clearing space in a very long time. FICC has been the dominant central counterparty for US government debt for decades, operating in a market valued in the tens of trillions of dollars.

What CMESC actually does

At its core, CMESC will provide central counterparty clearing for cash US Treasuries, including bills, notes, and bonds, along with repo transactions collateralized by Treasuries.

The SEC has mandated that eligible US Treasury transactions must be centrally cleared by December 31, 2026. Repo transactions face a similar deadline of June 30, 2027.

One of the key selling points is cross-margining with CME’s existing futures products. If a firm holds offsetting positions in Treasury futures and cash Treasuries, cross-margining lets them reduce the total collateral they need to post.

CMESC will also support both “done-with” and “done-away” execution models, meaning participants can clear trades regardless of whether they executed them with or through their clearing member.

The timeline and what’s already happened

CME Group Chairman and CEO Terry Duffy has emphasized the importance of expanded clearing capacity for helping market participants comply with the incoming SEC mandates. The company initially targeted a Q2 2026 launch for full operations, though updates indicate that timeline has shifted to Q3 2026 for broader service availability.

The December 7 date marks the formal establishment of the entity, but the ramp-up to full clearing operations will be gradual. Early cross-margining activities and onboarding preparations are expected to proceed over the coming months, with the first customer trades anticipated by around May 2026.

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