GPW Benchmark S.A. published the amended Rules of the GPW Indices Family, reflecting changes to the methods of determining the GPW Indices regarding the rules for conducting an extraordinary adjustment of the list of Participants of the GPW Indices in case of a new company's debut. These changes were introduced following public consultations and approval by the Oversight Committee of Capital Market Benchmarks.

The changes will enter into force on June 8, 2026.

The amended Rules are available here.