Case Study

The Mulliez Family Business: Unlocking the secrets of entrepreneurial DNA (A)

7 pages
May 2026
Reference: IMD-2748

Though little-known outside of its home country of France, the Mulliez family enterprise is one of the largest privately held business networks in the world. The Association Familiale Mulliez (AFM) unites over 1,000 family shareholders and oversees a portfolio of more than 90 companies operating across retail, services and other sectors. Its flagship companies include Decathlon, Auchan, Leroy Merlin, Cultura, Kiabi, Pimkie, Norauto/ATU and Flunch. Collectively, these businesses employ over 700,000 people in 80 countries and generate estimated revenues of nearly €100 billion annually. Case A begins in 1905, when Louis Mulliez founded a yarn twisting factory in northern France. This modest textile operation laid the foundation for what would become one of Europe’s most influential family businesses. Over the decades, the family diversified beyond textiles, entering retail in 1961 when Gérard Mulliez opened the first Auchan store in Roubaix. The hallmark of the Mulliez dynasty is its collective ownership model. In 1968 the family enshrined its ‘Everyone in everything’ (Tous dans tout) approach in a family constitution and launched an association to oversee its constellation of family-owned companies. Its governance model – anchored in principles of solidarity, long-term orientation and entrepreneurial spirit – has enabled the Mulliez family to remain competitive while sustaining cohesion and entrepreneurial vitality across generations. The case reveals some of the biggest challenges that enterprising families must overcome to survive as well as how to build enough trust to traverse delicate moments such as generational successions. Case A ends in 1992, as the family experiences a crisis of confidence and must decide whether it should sell off all its businesses.

Learning Objective
  • Understand how family businesses can institutionalize entrepreneurship as a core capability across generations.
  • Examine the role of cultural values, trust and long-term orientation in sustaining entrepreneurial vitality.
Keywords
Family Business, Entrepreneurship, Ownership, Governance, Leadership, Next Generation, Succession
Settings
Europe, France
Association Familiale Mulliez
1905-1992
Type
Field Research
Copyright
© 2026
Available Languages
English
Related material
Teaching note, Video
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This case study is part of a series
  • The Mulliez Family Business: Unlocking the secrets of entrepreneurial DNA (A)
  • The Mulliez Family Business: Unlocking the secrets of entrepreneurial DNA (B)
Global Family Business Center
This case study is part of a series
  • The Mulliez Family Business: Unlocking the secrets of entrepreneurial DNA (A)
  • The Mulliez Family Business: Unlocking the secrets of entrepreneurial DNA (B)
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The Mulliez Family Business: Unlocking the secrets of entrepreneurial DNA (A)
By Peter Vogel and Anouk Lavoie
Case reference: IMD-2748 ©2026
Summary
Though little-known outside of its home country of France, the Mulliez family enterprise is one of the largest privately held business networks in ...
Reference IMD-2748
Copyright ©2026
Copyright owner IMD Copyright
Organization Association Familiale Mulliez
Available Languages English
Contact

Research Information & Knowledge Hub for additional information on IMD publications

The Mulliez Family Business: Unlocking the secrets of entrepreneurial DNA (B)
By Peter Vogel and Anouk Lavoie
Case reference: IMD-2749 ©2026
Summary
Case B of the Mulliez Family Business case series examines the family's entrepreneurial 'DNA': the unique set of characteristics that have enabled ...
Reference IMD-2749
Copyright ©2026
Copyright owner IMD Copyright
Organization Association Familiale Mulliez
Available Languages English
Contact

Research Information & Knowledge Hub for additional information on IMD publications