OMX Baltic 10: What It Measures and How It Is Built

Direct Answer

The OMX Baltic 10 tracks the ten most liquid shares listed across the Baltic stock exchanges of Nasdaq (Tallinn, Riga and Vilnius). Administered by Nasdaq Nordic and Baltic Indexes, it uses free-float-adjusted market-capitalisation weighting and is the primary cross-Baltic blue-chip benchmark in the OMX Nordic and Baltic family.

What this index covers

The OMX Baltic 10 covers the Estonia, Latvia, Lithuania equity market through the Nasdaq Tallinn, Nasdaq Riga, Nasdaq Vilnius. Nasdaq Nordic and Baltic Indexes defines which securities are eligible, how they are selected from that pool and how much each contributes to the published number.

The eligible universe is: The ten most liquid shares listed on the Baltic exchanges (Tallinn, Riga, Vilnius) as measured by turnover velocity and free-float market capitalisation over the review period, per the Nasdaq OMX published Baltic Index Methodology.

Understanding the eligible universe is the most important step in understanding what an index measures. An index that selects by listing venue will behave differently from one that selects by company domicile, and a sector index will have very different risk characteristics from a broad market measure even if they share some constituents.

How constituents are weighted

Free-float-adjusted market-capitalisation weighting. Individual components may be subject to a weight cap at each semi-annual review, per the published Nasdaq OMX Baltic Index Methodology.

Weighting is the mechanism that translates a list of companies into a single number. Free-float-adjusted market-capitalisation weighting is the most common method: larger companies contribute more to the index level than smaller ones, and the free-float adjustment excludes shares that are not available to public investors (such as government-held strategic stakes or closely-held founder shares). This makes the index level reflect the actual investable market rather than total market size.

Eligible universe and eligibility rules

Eligibility rules determine which companies can be included at a review and which must exit. The key dimensions to verify are: which exchange or market segment is in scope; whether domicile or listing venue determines eligibility; the minimum free-float threshold; the liquidity screen; and whether there are sector restrictions.

For the OMX Baltic 10, the relevant market is the Nasdaq Tallinn, Nasdaq Riga, Nasdaq Vilnius and the administrator is Nasdaq Nordic and Baltic Indexes. Per the published Nasdaq Nordic and Baltic Indexes methodology (verification date: August 31, 2026), the eligible universe is defined as: The ten most liquid shares listed on the Baltic exchanges (Tallinn, Riga, Vilnius) as measured by turnover velocity and free-float market capitalisation over the review period, per the Nasdaq OMX published Baltic Index Methodology.

Reconstitution schedule

Semi-annual. Nasdaq reviews Baltic index constituents in April and October. Fast-entry provisions apply for exceptional liquidity changes between scheduled reviews, per the published methodology.

Reconstitution is the date on which the index changes shape by design rather than by price. Passive funds tracking the index must trade toward the new membership list, which creates predictable order flow around the review date. Active managers often position around reconstitution events to capture or avoid that flow.

How investors use this index

Regional Baltic blue-chip benchmark; reference for Baltic equity exposure in Nordic/Baltic fund mandates and ETPs tracking the OMX Baltic family.

For any index, three uses are distinct: as a performance benchmark (measuring how well a portfolio did relative to the market), as a product underlying (an ETF or structured product replicating the index), and as a research reference (tracking market-cap, sector weights or concentration over time). The same index can serve all three purposes, but the choice of which to use depends on the investment mandate and the specific question being answered.

Comparisons with related indexes

The OMX Baltic 10 is most often compared with:

• OMX Baltic Benchmark: broader universe including all Baltic benchmark-eligible shares; the OMX Baltic 10 is the concentrated liquid subset.
• OMX Nordic 40: covers the 40 most liquid Nordic shares; the Baltic 10 is the Baltic equivalent and a separate regional index.
• OMX Tallinn: single-country Estonian all-share; the Baltic 10 is cross-Baltic and more concentrated.

When switching from one benchmark to another, the practical question is what changes in coverage: does the alternative add smaller companies, exclude a sector, change the weighting method or extend to a different currency? Each of these changes alters what the index can tell you about market performance.

References

• Nasdaq: OMX Baltic 10 Overview, as published per the provider's methodology page. All methodology claims on this page are derived from this source.

Current OMX Baltic 10 constituents

Nasdaq Nordic and Baltic Indexes publishes and licenses the OMX Baltic 10 constituent list. Swoopr does not republish it here. The provider's own page is the authoritative source for current membership and weights.

Nasdaq Nordic and Baltic Indexes: official OMX Baltic 10 page

Related reading

• All stock market indexes: how indexes are built, weighted and revised.
• European Stock Market 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