The Stena Sphere is comprised of three parent companies wholly owned by the Sten A. Olsson family: Stena AB, Stena Sessan AB and Stena Metall AB. Together, they make up one of the largest family-owned business groups in Sweden, with operations around the world.
The Stena Sphere is divided into seven business areas.
The partly owned company Concordia Maritime AB is listed on the Stockholm Stock Exchange.