Ratos

The Söderberg brothers established Ratos in 1933, as a holding company for the family's growing enterprises. At the time the family was owners of Söderberg & Haak. Ratos developed with extensive ownership in companies such as Stora Kopparberg, Gränges and Esselte in addition to a wholly owned steel division. It was listed on the stock exchange in 1954.

In 1979 the steel division, that at the time was called Tibnor, was sold to the state owned SSAB as part of the re-organization of the crisis hit steel industry. After that the company expanded into new areas, including a larger number of transport companies, the hotel chain Scandic Hotels and the plumbing chain Dahl International. During this period Sven Söderberg (1928–2004) was President and CEO.

In 2019, Ratos sold the Adelswärdska house, the building on Drottninggatan in Stockholm. Buyers were the National Property Board of Sweden. The reason for the sale was the increasingly increased safety requirements in the environment, as the building lies between the Sagerska palace (the Prime Minister's Housing) and Rosenbad (Government Offices) and the area was increasingly blocked off. The property was purchased by Söderberg & Haak in 1938 and later became rated.

Majority-owned platform companies

Diab Group A global company developing and manufacturing advanced structural core materials and solutions for lighter, sustainable applications in high-performance industries. (stake 98%) (www.diabgroup.com/)

HL Display A global leader helping stores and brands create attractive, efficient and more sustainable store environments with innovative solutions that enhance the shopping experience. (stake 98%)(www.hl-display.com/)

Knightec GroupThe leading Nordic professional services firm, helping companies solve complex business challenges through the combination of business strategy and technology development. (stake 90%)(www.knightecgroup.com/)

Presis Infra A leading provider of critical infrastructure maintenance in Norway and Sweden, contributing to the safety and reliability of key transport networks. (stake 98%)(www.presisvegdrift.no/)