Altor
Jakobsgatan 6, Stockholm, Stockholms Lan, 111 52, Sweden
Overview
Altor is a family of private equity funds focused on investing in and developing medium-sized companies. They want to create enduring value and make a real difference as a valuable partner for owners and managers in building world-class companies.
- Total investments
- 6
- Lead investments
- 2
- Investments · 12mo
- 0
- Active investors
- 9
Sector focus
- Finance
- Impact Investing
- Small and Medium Businesses
Investment portfolio
- Aira
Participated · Equity · Aug 2025
Founded in 2023 in Stockholm, Aira provides vertically-integrated air-to-water heat pump systems, bundled financing options, full-service installation and a 15-year guarantee to households. The company has rapidly expanded beyond Sweden into Germany, Italy and the United Kingdom and now operates 18 regional hubs and four training academies for heat-pump technicians. Management forecasts an annual sales volume of €200 million and the workforce has grown to roughly 1,200 employees. New capital will be channelled into R&D at the Swedish innovation centre, increased manufacturing capacity at its Wrocław, Poland facility and deeper market penetration through strategic energy and housing partnerships. Aira positions itself to tap a European heat-pump market expected to exceed €150 billion by 2030. By replacing gas boilers with its heat pumps, households can cut heating costs by up to 40 % and CO₂ emissions by up to 100 % when using green tariffs.
- Stegra
Led · Equity · Sep 2023
Stegra is an ailing Swedish startup focused on building the world’s biggest green-steel plant. The company has been seeking substantial new capital to complete construction of the facility and to remain in business. Reportedly, Stegra sought 15 billion SEK in fresh funding to stabilize operations and finish the project. A Wallenberg-led investor group committed 7–8 billion SEK as part of that financing, becoming the company’s largest shareholder. The funding was presented as a rescue package to ensure the plant’s completion. The article did not provide operational metrics such as revenue, users, or prior financing details.