Diethelm Keller Group

Diethelm Keller Group

Diethelm Keller Group traces its roots to trading companies founded in the late 1860s by the Diethelm and Keller families. Descendants expanded the original businesses into marketing, logistics, industrial activities, and diversified holdings. Today the group comprises five operating units plus dedicated real-estate and shareholder-services divisions, together with stakes in DKSH Holding Ltd. and Bergos Ltd. Capital deployment spans buyouts, growth equity, seed and late-stage venture, and direct co-investments. Confirmed positions include participations in DKSH and Bergos alongside internal platforms in mobility, supply-chain services, and robotics developed with partners such as Marvin Robotics. Geographic reach covers Europe, Asia, North America, Africa, South America, and Oceania. Real-estate holdings include industrial parks in Switzerland and an international portfolio spanning multiple continents. At the end of 2024 the group employed more than 2,200 people. Additional properties are held in Wohlen and Dachsen, Switzerland. Tam Nguyen also serves as Managing Director of the START Foundation, the family's philanthropic vehicle. Ownership remains concentrated among family shareholders after the 2022 purchase of Jean-Daniel de Schaller's shares by Andreas W. Keller and Adrian T. Keller. This closed structure supports long-term holding periods and direct operational involvement without external fund vehicles.