Warsaw, September 17, 2020
GPW Benchmark Announcement
on the rules for extraordinary adjustment of the composition
of the index portfolio
In response to inquiries to GPW Benchmark as the administrator of indices and benchmarks, the Management Board of GPW Benchmark explains below the rules for the extraordinary adjustment of the composition of the WIG20 portfolio:
The rules for extraordinary adjustments to the composition of index portfolios are defined in GPW Indices Family Rules. According to the Rules, an extraordinary adjustment is conducted, among other cases, in order to enter a newly introduced company to trading on the Stock Exchange, into the list of index participants.
An extraordinary adjustment of the WIG20 index portfolio and inclusion into its composition shares of the newly introduced company to trading takes place provided that the free-float shares of this company on the first quotation date, account for at least 5% of the index portfolio value on that day. The decision on an extraordinary adjustment is made by the administrator (GPW Benchmark) upon verification if those conditions have been met. An suitable communiqué shall be made public two days before the correction is made.
In case of extraordinary adjustment, the company at the lowest position in the last index ranking shall be removed from the list of WIG20 index participants. The extraordinary adjustment of the WIG20 index results in adequate adjustment of the mWIG40 and sWIG80 indices. Similar changes shall also be made in the ‘total return’ versions of the above-mentioned indices, i.e. in the WIG20TR, mWIG40TR and sWIG80TR indices.
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GPW Benchmark S.A., part of the GPW S.A. Capital Group, is the administrator of the WIBID and WIBOR Reference Rates and Indices based on data from the WSE, BondSpot and CEE markets. More information at https://gpwbenchmark.pl/en-home



