New service for clearing OIS transactions based on POLSTR

As of 17 June 2026, the scope of activity of KDPW_CCP S.A. is being extended to include the clearing of OIS (Overnight Indexed Swap) transactions based on the new POLSTR reference rate. This extension is implemented in connection with the decision of the Polish Financial Supervision Authority (KNF) dated 7 May 2024 regarding the extension of the scope of the authorisation to provide clearing services as a CCP, in respect of the following class of financial instruments: derivatives – interest rate derivatives whose underlying instrument was originally the WIRON index, subsequently – following the notification made on 11 December 2025 pursuant to Article 15a(1) of Regulation (EU) No 648/2012 of the European Parliament and of the Council of 4 July 2012 on OTC derivatives, central counterparties and trade repositories – was changed to the POLSTR index.

The POLSTR OIS will be covered by the same clearing guarantee model as to other non-organised trading (OTC) interest rate derivatives. Information on the margin calculation model, the POLSTR OIS forward curve and the POLSTR OIS valuation formula is set out in the Detailed Rules of the OTC Clearing System.

More information on the amendments introduced to the Detailed Rules of the OTC Clearing System.