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

Direct Answer

The OMX Baltic Benchmark index covers all shares listed on the Baltic Nasdaq exchanges (Tallinn, Riga and Vilnius) that meet the eligibility criteria for benchmark inclusion. Administered by Nasdaq Nordic and Baltic Indexes, it is a broader measure of Baltic equity markets than the OMX Baltic 10, which selects only the ten most liquid names.

What this index covers

The OMX Baltic Benchmark 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: All shares listed on the Baltic Nasdaq exchanges that satisfy the minimum free-float, liquidity and market-capitalisation criteria specified in the published Nasdaq OMX 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, applied to all qualifying Baltic-listed securities, per the Nasdaq OMX published 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 Benchmark, 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: All shares listed on the Baltic Nasdaq exchanges that satisfy the minimum free-float, liquidity and market-capitalisation criteria specified in the published Nasdaq OMX Baltic Index Methodology.

Reconstitution schedule

Semi-annual review schedule aligned with the wider OMX Baltic index family. Entries and exits between scheduled reviews may occur under fast-entry rules for major corporate events.

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

Broad Baltic equity benchmark; reference for mandates seeking full Baltic market exposure rather than the concentrated liquid top-ten slice represented by the OMX Baltic 10.

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 Benchmark is most often compared with:

• OMX Baltic 10: concentrated liquid blue-chip subset of 10 shares; the Benchmark includes all eligible Baltic shares.
• OMX Tallinn: single-country Estonian all-share; the Baltic Benchmark spans all three Baltic markets.

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 Index Overview, as published per the provider's methodology page. All methodology claims on this page are derived from this source.

Current OMX Baltic Benchmark constituents

Nasdaq Nordic and Baltic Indexes publishes and licenses the OMX Baltic Benchmark 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 Benchmark 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