The Steering Committee of the National Working Group for benchmark reform in Poland informs that POLSTR® Interest Rate Index has been applied for the first time in the domestic financial market on 1 September 2025. According to the information provided by GPW Benchmark SA, a change in the methodology for WIG20TRsht, WIG20TRlev, mWIG40TRsh and mWIG40TRlv indices entered into force on the same date. The change was a result of the Administrator’s own actions taken to implement the benchmark reform roadmap and it involved the replacement of WIRON® by POLSTR® in the methodology for calculating the strategy indices.

Therefore, POLSTR® gained a status of a benchmark in accordance with the requirements of the EU Benchmark Regulation.