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J.F. Müller & Sohn
Raetke H. Müller chairs a 1795-founded Hamburg family office that deploys permanent capital into European mid-market industrial and digital holdings.
J.F. Müller & Sohn
The firm traces its origins to J.F. Müller's 1795 Hamburg trading house, originally focused on timber and maritime shipping. Sixth-generation family leader Raetke H. Müller chairs the Supervisory Board, while the Eckelmann family — close associates through Eurokai Group — has partnered on port logistics for decades. The family retains a historical shipping fleet alongside direct real-estate holdings that include its Klopstockstraße headquarters and the Cruise Center Hamburg-Altona. J.F. Müller & Sohn divides its permanent capital portfolio into 'Old Economy' and 'New Economy' verticals. Established industrial positions include majority stakes in Masterflex SE, a listed specialist in high-tech plastic hose and connector systems for automotive and medical-technology industries, and Silon s.r.o., a Czech producer of polyolefin-based performance compounds (per firm website). Digital and technology holdings span secure-cloud provider Drooms AG, keyless entry system KIWI.KI GmbH, and data-analytics firm Odoscope GmbH. The office also co-invests alongside strategic partners: the Schmidt family joined in the Masterflex position through investment vehicle SVB GmbH & Co. KG. Geographic deployment concentrates on German-speaking Europe and the Czech Republic. The three-person investment team operates under CEO Raphael Söhngen, who joined in 2022 after serving as a Managing Director at Intriva Capital. He previously held vice-president roles in European private credit at HPS Investment Partners and in European private equity at Fortress Investment Group, and began his career at Goldman Sachs' Archon Group (per firm website). Portfolio Manager Anna Lena Gruner arrived in 2020 from operational roles at HAPPYCAR and tigermedia, while Lucia Gihr has managed finance and operations since the mid-1990s. The firm has not publicly announced any separate co-investment club or external investor vehicle. The defining structural feature is its permanent-capital holding-company architecture: there are no fund lifecycles or external redemption pressures. The office acts as an indefinite-duration buyer — particularly relevant for its succession-driven industrial deals — while importing late-cycle institutional rigor through Söhngen's credit- and special-situations background. No formal philanthropic foundation is disclosed, though the family maintains affiliations with the American Academy in Berlin and the Axel Springer Stiftung.
General information
Firm type
Single Family Office
Year founded
1795
AUM
Undisclosed
Location
Region
Europe
Country
Germany
City
Hamburg
Corporate office
Klopstockstraße 5, 22765 Hamburg, Germany
Principals
Raphael Söhngen
Member of the Management Board and CEO
Raetke H. Müller
Chairman of the Supervisory Board
Anna Lena Gruner
Portfolio Manager
Lucia Gihr
Finance and Operations Manager
Altss tracks 1 additional named team member for this firm — including direct investment leads, IR, and operating principals not listed on the public website.
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Frequently asked questions
Who runs investment decisions at J.F. Müller & Sohn?
CEO Raphael Söhngen leads the three-person investment team from Hamburg. He joined in 2022 after senior roles in special-situations and credit investing at Intriva Capital, HPS Investment Partners, and Fortress Investment Group. Supervisory Board Chairman Raetke H. Müller represents the family's multi-generational oversight.
What is the firm's portfolio structure?
The office divides holdings into two verticals: 'Old Economy' — principally industrial manufacturing and timber assets — and 'New Economy,' covering secure-cloud computing, PropTech, digital media, and data analytics. Both majority and minority positions appear across the portfolio.
Does J.F. Müller & Sohn invest in funds or only directly?
The firm's disclosed investment activity consists of direct stakes in operating companies rather than fund commitments. Holdings such as Masterflex SE, Silon s.r.o., and Drooms AG are held directly on the balance sheet, consistent with a permanent-capital holding-company model.
What investment stages does J.F. Müller & Sohn target?
The firm covers buyout, growth, and startup-stage companies. Its industrial holdings tend toward mature, succession-driven buyouts, while the 'New Economy' portfolio includes earlier-stage ventures such as KIWI.KI and Odoscope.
Where does the underlying wealth come from?
The wealth originates from a Hamburg trading house founded in 1795, initially focused on timber and maritime shipping. The Müller family retains a historical shipping fleet, and the associated Eckelmann family remains a co-investor through the Eurokai container-terminal group.
How is J.F. Müller & Sohn related to Eurokai?
The Müller and Eckelmann families have partnered in Hamburg port logistics for decades. Thomas H. Eckelmann is a major Eurokai Group shareholder and close associate of Supervisory Board Chairman Raetke H. Müller, forming a long-standing co-investment axis.
Does the firm maintain philanthropic structures?
No formal philanthropic foundation is publicly disclosed. The family maintains institutional affiliations with the American Academy in Berlin and the Axel Springer Stiftung, but does not operate a visible standalone charitable vehicle.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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