Stena Adactum
Also known as Stena Adactum AB
Gothenburg investment company of the Olsson family's Stena Sphere, founded in the early 2000s; takes long-term stakes in Swedish companies with at least SEK 1bn turnover, excluding venture capital.
USEFUL FOR Business owners seeking a long-term partner · Co-investors
Investment company of the Olsson family's Stena Sphere (Gothenburg), owned by Stena AB. Not Stena AB, Stena Metall or Stena Sessan, the sphere's three parent companies, nor Stena Line.
Family & background
- FAMILY
- Olsson
- WEALTH ORIGIN
- Stena Sphere (shipping, recycling, property; founded 1939 by Sten Allan Olsson as a metals trading business)
- HEADQUARTERS
- Gothenburg, Sweden
Investment approach
- GEOGRAPHY
- Sweden
- STAGES
- Buyout
- ROUTES
- Direct investments
- STRATEGIES
- Direct investments
- INBOUND
- Accepts submissions
Overview
Stena Adactum was founded in the early 2000s to diversify the Stena Sphere, one of Sweden's largest family-owned corporate groups, beyond its traditional business areas; it is owned by Stena AB. Its website says it acquires companies with potential for growth and profitability, acts as an active partner without a predetermined investment horizon and aims to double the value of its investments every five years. It looks for Swedish companies with international business or potential, turnover of at least SEK 1 billion, positive cash flow and proven management, and explicitly avoids venture capital, indirect ownership, people-dependent consultancies, biotech/life science and turnarounds. Portfolio companies listed on its site are Ballingslöv International, Envac, Blomsterlandet, SR Energy, Gunnebo, Svedbergs Group, Midsona, Ependion and Plantehallen; it also built a 5.8% shareholding in Inwido between December 2025 and February 2026.
Investment thesis
Long-term, active ownership of Swedish companies with international potential, at least SEK 1bn turnover, positive cash flow, a strong brand or niche position, proven management and room for add-on acquisitions; no venture capital, biotech or turnarounds.
Holdings & investments (10)
- EnvacNOTABLEIndustrial & Manufacturing · since 2005
- Ballingslöv InternationalNOTABLEConsumer & E-commerce · since 2002
- BlomsterlandetNOTABLEConsumer & E-commerce · since 2004
- InwidoIndustrial & Manufacturing · since 2025 · 5.8% shareholding (Feb 2026)
- Consumer & E-commerce · since 2022
- Consumer & E-commerce · since 2016
- Climate & Energy · since 2005
- Food & Agriculture · since 2004
- Industrial & Manufacturing · since 2003
- Industrial & Manufacturing
People
Classification
Family Holding. A family's holding company that owns stakes in several separate businesses or invests beyond its own group, without calling itself a family office. How family capital is classified →
FAQ
Stena Adactum is a family holding based in Gothenburg, Sweden.
Stena Adactum invests on behalf of the Olsson family (Stena Sphere (shipping, recycling, property; founded 1939 by Sten Allan Olsson as a metals trading business)).
Stena Adactum invests directly in companies. Its stated asset mix includes direct investments.
Stena Adactum invests at Buyout stage.
Key people at Stena Adactum include Anders Wassberg (CEO), Johan Wester (Senior Vice President), Henrik Hallin (Chief Financial Officer) and Henrik Munthe (Investment Director).
Stena Adactum's holdings and investments include Envac, Ballingslöv International, Blomsterlandet, SR Energy, Gunnebo, Plantehallen, Ependion and Svedbergs Group, among others.
The most recent publicly reported investment by Stena Adactum is Inwido (Shareholding increased by 3.0% of outstanding shares to 5.8%), announced in Feb 2026.
Stena Adactum states that it accepts submissions through its official contact page.