• Dress Rehearsal 4 for LIBOR to SOFR Conversion of USD Interest Rate Swaps - Effective March 29, 2023

      • To
      • Clearing Member Firms; Back Office Managers
      • From
      • CME Clearing
      • #
      • 23-106
      • Notice Date
      • 29 March 2023
      • Effective Date
      • 29 March 2023

    • CME will conduct a Dress Rehearsal for the USD LIBOR to SOFR Swap Conversion in the New Release environment tonight, Wednesday, March 29, following the close-of-business at 6:00 pm ET. This test simulates the Primary Conversion to be held in Production on April 21, 2023 and includes all LIBOR swap products with the exception of Zero Coupon Swaps.

      For the full text of this advisory, please click here.

       

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.