Private company

LetterOne

Logo: Kopiersperre ( talk ), Public domain, via Wikimedia Commons4

Investment company

LetterOne Holdings S.A. (LetterOne) is an international investment business based in Luxembourg. With long-term investments in the telecoms, technology, healthcare, and energy sectors, the firm has four main units: L1 Health, L1 Technology, L1 Retail, and L1 Energy, all of which are supported by L1 Treasury Services, which manages the group's liquidity.2 It was founded by Mikhail Fridman.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

2013Founded1
  • Industryinvestment1
  • HeadquartersLuxembourg1
  • Websitewww.letterone.lu
  • Legal formsociété anonyme1
  • LEI5493006TB7V5XE9BOU753
  • StatusActive3
  • LEI statusIssued and current3
  • Registered address161, Rue du Kiem, L-8030 Strassen, Luxembourg3
  • Registered withLuxembourg Business Registers, B1760103

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LetterOne Holdings S.A. (LetterOne) is an international investment business based in Luxembourg. With long-term investments in the telecoms, technology, healthcare, and energy sectors, the firm has four main units: L1 Health, L1 Technology, L1 Retail, and L1 Energy, all of which are supported by L1 Treasury Services, which manages the group's liquidity.2

Corporate structure

LetterOne sits at the top of its group. 36 entities, 12 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

What it owns

What LetterOne reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Stakes and holdings (Wikidata)

Things Wikidata records the company as owning, with the share when stated.1

The story

Founded by Mikhail Fridman in 2013.1

Leadership

Who has led LetterOne, and when. Pick a name to see everywhere that person has worked.

Products and brands

  • asset management

Listed on Wikidata.1

Subsidiaries and ownership

Owners

Also owns

From Wikidata.1

Timeline

  1. 2013Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
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  4. 4