List of the 90 largest Multi Family Offices Benelux – Belgium, Luxembourg, Netherlands [2025]

List of 3 large Benelux multi-family offices

The Benelux region, comprising Belgium, the Netherlands, and Luxembourg, hosts a mature and diverse multi-family office (MFO) ecosystem, shaped by each country’s distinct legal, fiscal, and cultural environments. Luxembourg is particularly well-known as the home of many financial institutions, investment managers and family offices. However, Belgium and the Netherlands also have many high-net-worth individuals who use local multi-family offices to manage their assets. In the following, we are introducing you to three interesting family investment firms from the area.

1. Anthos Fund & Asset Management (Netherlands)

Anthos started as the asset management arm for the Dutch Brenninkmeijer single-family office, investing in equities, fixed income, and real estate. Since 2010, the family office has also been investing in private equity. Over recent years, the family office opened up for third-party family offices, now acting as multi-family offices, offering a broad portfolio of services and investment strategies for their clients. The company’s investment process is based on three core values: sustainability, human dignity, and corporate social responsibility.

2. Portolani (Belgium)

The Belgian multi-family office Portolani separates its services into the sectors “portfolio construction and monitoring”, “corporate finance advice”, and “family governance and wealth structuring”. The family office manages the wealth of two dozen wealthy families and was launched in 2006. Portolani works together with managers of liquid funds and illiquid funds, focused on private equity, real estate, private debt, and infrastructure.

3. Clavis (Netherlands)

The Dutch multi-family office Clavis was launched in 2008. In its asset management division, the family office invests in financial markets, e.g., in bonds and alternative investments. Furthermore, Clavis pursues private market investments, including private equity, real estate, and debt. For wealthy families, Clavis offers a wide range of family office services.

Benelux Multi Family Offices

The Benelux area consists of Belgium, the Netherlands and Luxembourg. All of those countries are important financial hubs in Europe. Many wealthy entrepreneurial families are relying on multi-family offices, which are pooling the assets of multiple families. Investments are done through external asset managers, own funds, or alternative investments.

Picture Source:  Micheile Henderson; Yannis Papanastasopoulos via Unsplash