Our portfolio includes the international WEFA Group, innovative start-ups such as stimOS and real estate projects across Germany. Discover our investments and partnerships.

Industrial holdings

WEFA Group Singen

The WEFA Group was established in 1972 as a subsidiary of Alusuisse AG in Worblingen. The company started out producing die casting, stamping and extrusion tools as well as special dies. After a management buyout and relocating to Singen, it realigned its strategy to focus exclusively on making aluminium extrusion dies.

Industrial holdings

WEFA Inotec Singen

Wefa Inotec is specialised in manufacturing durable and almost entirely maintenance-free extrusion dies. WEFA is a global market leader with a patented proprietary CVD coating process.

Industrial holdings

WEFA Swiss
Thayngen / CH

The WEFA Group’s Swiss branch in Thayngen is a centre of excellence for high-quality extrusion dies that it supplies to the Asian market.

Industrial holdings

WEFA Bohemia
Děčín / CZ

Standard and large dies are made at this production site in the Czech Republic that opened in 1994.

Industrial holdings

WEFA Cedar
Cesar Springs / USA

WEFA Cedar was added in 2009 to tap the North American market and supply it with high-quality extrusion dies.

Start-ups

stimOS
Konstanz

Boesken GmbH holds shares in stimOS GmbH, an innovative start-up specialised in the field of medical technology.

Start-ups

WEFA MedTec
Singen

Specialised manufacturer of medical PEEK / Ti implants for spinal surgery