Direct Answer
The STOXX Global 3000 is a rule-based measurement of 3,000 large-, mid-, and small-cap companies across 33 developed market countries worldwide, maintained by STOXX/Qontigo. 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 STOXX Global 3000 covers 3,000 large-, mid-, and small-cap companies across 33 developed market countries worldwide, within the Global market. STOXX/Qontigo defines which securities are eligible, how they are selected from that pool, and how much each one contributes to the published number.
The index name does not state a fixed company count, so the number of constituents follows the eligibility rules rather than a target.
How constituents are weighted
Weighted by free float market capitalization with no cap on components, unlike the STOXX USA 500 and Eastern Europe 300 benchmark indices which are capped.
The weighting method is the single biggest driver of how an index behaves. Two indexes covering the same market can diverge for years purely because they weight differently, which is why comparing index levels without knowing the method tells you very little.
What qualifies for inclusion
Drawn from the STOXX Global Total Market index, one stock per company (the most liquid). Eligible stocks are ranked by free float market capitalization with a 10% buffer: the largest 2,700 qualify directly and the remaining 300 are chosen from current components ranked 2,701 to 3,300, filled with the largest remaining stocks if short.
Eligibility rules are the part of an index most readers never look at and the part that decides what it can possibly measure. A screen that excludes a whole sector, or admits only one listing venue, shapes the result far more than any day of trading does.
When the membership is revised
Reviewed quarterly in March, June, September and December, with the cut off on the last trading day of the month before the review month. The selection list is updated monthly, deleted stocks are replaced by the highest ranked non component, and fast entry and fast exit are not applicable.
Reconstitution is the one date an index changes shape by design rather than by price. Funds tracking it have to trade toward the new membership, which is why the schedule matters to anyone holding the tracker rather than only to the provider.
The rule that surprises people
The index is not an aggregate of the regional benchmark indices (Americas, All Europe, Asia and Pacific): it is selected on its own from the global Total Market index, so its membership can differ from them.
References
- STOXX/Qontigo: STOXX, STOXX Index Methodology Guide (Portfolio Based Indices), September 2026 edition, as published 2026. Every rule described on this page is taken from this document.
Current STOXX Global 3000 constituents
STOXX/Qontigo publishes and licenses the STOXX Global 3000 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.
- Global 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 STOXX Global 3000?
STOXX/Qontigo maintains the STOXX Global 3000 and publishes the methodology document that defines its eligibility and weighting rules.
What does the STOXX Global 3000 measure?
It measures 3,000 large-, mid-, and small-cap companies across 33 developed market countries worldwide. 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 STOXX Global 3000 constituents?
STOXX/Qontigo publishes the current constituent list. Swoopr does not republish it, because index providers license constituent data and Swoopr holds no such licence.