---
title: "OMX Stockholm 30: Methodology"
description: "OMX Stockholm 30 is maintained by Nasdaq and covers swedish blue-chip benchmark. How the index selects and weights its constituents, and what that means for what it measures."
canonical: https://www.getswoopr.com/stocks/indexes/omx-stockholm-30/
source: "Swoopr Investment: https://www.getswoopr.com"
---

# OMX Stockholm 30: What It Measures and How It Is Built







## Direct Answer



> The OMX Stockholm 30 is a rule-based measurement of swedish blue-chip benchmark, maintained by Nasdaq. 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 OMX Stockholm 30 covers swedish blue-chip benchmark, within the Sweden market. Nasdaq 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 30 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 Nasdaq's current methodology document, so none is stated here rather than guessed. The provider link below is authoritative.








## Current OMX Stockholm 30 constituents



Nasdaq publishes and licenses the OMX Stockholm 30 constituent list. Swoopr does not republish it here. The provider's own page is the authoritative source for current membership and weights.



[Nasdaq: official OMX Stockholm 30 page](https://indexes.nasdaq.com/)








## Related reading



- [All stock market indexes](https://www.getswoopr.com/stocks/indexes/): how indexes are built, weighted and revised.
- [Europe indexes](https://www.getswoopr.com/stocks/indexes/europe/): others covering the same region.
- [Index concentration](https://www.getswoopr.com/technical-analysis/market-concentration/index-concentration/): measuring how much of an index sits in its largest holdings.
- [Index rebalancing and inclusion effects](https://www.getswoopr.com/stocks/corporate-actions-catalysts/index-rebalancing-and-inclusion-effects/): what happens to a stock when index membership changes.








## Frequently Asked Questions


### Who maintains the OMX Stockholm 30?



Nasdaq maintains the OMX Stockholm 30 and publishes the methodology document that defines its eligibility and weighting rules.




### What does the OMX Stockholm 30 measure?



It measures swedish blue-chip 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 OMX Stockholm 30 constituents?



Nasdaq publishes the current constituent list. Swoopr does not republish it, because index providers license constituent data and Swoopr holds no such licence.











## About the author



The [Swoopr Editorial Team](https://www.getswoopr.com/authors/swoopr-editorial-team/) writes Swoopr Investment's educational library, covering market structure, analysis methods and the mechanics behind the numbers investors read every day.



Our [editorial policy](https://www.getswoopr.com/legal/editorial-policy/) and [corrections policy](https://www.getswoopr.com/legal/corrections-policy/) set out how this content is produced, reviewed and fixed when it is wrong.