Direct Answer
The WIG20 is a rule-based measurement of polish large-cap equity benchmark, maintained by GPW Benchmark. Like every index it owns nothing: it is a number produced by applying a published weighting formula to a selected list of companies, revised on a schedule the provider sets.
What this index covers
The WIG20 covers polish large-cap equity benchmark, within the Poland market. GPW Benchmark defines which securities are eligible, how they are selected from that pool, and how much each one contributes to the published number.
The name states a target of 20 companies. A target is not a guarantee of the exact count on any given day: corporate actions, dual share classes and pending additions all move the real number around it.
How constituents are weighted
Swoopr has not verified the weighting method for this index against GPW Benchmark's current methodology document, so none is stated here rather than guessed. The provider link below is authoritative.
Current WIG20 constituents
GPW Benchmark publishes and licenses the WIG20 constituent list. Swoopr does not republish it here. The provider's own page is the authoritative source for current membership and weights.
Related reading
- All stock market indexes: how indexes are built, weighted and revised.
- Europe indexes: others covering the same region.
- Index concentration: measuring how much of an index sits in its largest holdings.
- Index rebalancing and inclusion effects: what happens to a stock when index membership changes.
Frequently Asked Questions
Who maintains the WIG20?
GPW Benchmark maintains the WIG20 and publishes the methodology document that defines its eligibility and weighting rules.
What does the WIG20 measure?
It measures polish large-cap equity benchmark. The index is a calculated number applying a weighting formula to a selected list of companies, and it holds nothing itself.
Where can I see the current WIG20 constituents?
GPW Benchmark publishes the current constituent list. Swoopr does not republish it, because index providers license constituent data and Swoopr holds no such licence.