Family-owned businesses remain a key driver of global economic growth: the 500 largest companies in this category generate USD 8.8 trillion in revenue—10% higher than in 2023—and employ over 25 million people across 44 countries.

Put simply, if the combined revenues of these companies were measured against national GDPs, they would represent the third-largest economy in the world—trailing only the United States and China. This and other compelling insights are featured in the 2025 edition of the Global 500 Family Business Index, compiled this year by EY and the University of St. Gallen. Published biennially, the index ranks the world’s 500 largest family-owned businesses by revenue.

According to the survey, nearly half of these businesses (47%) are based in Europe, with North America accounting for 29% and Asia for 18%. The strong European presence is also reflected in Greece, where a family-owned company operating in the oil and gas sector (Motor Oil) has secured a spot on the list of the world’s 500 largest family enterprises, writes Greek outlet insider.gr.

The secret to their enduring success lies in three core elements: a commitment to long-term value creation, organizational agility, and an unwavering dedication to innovation. This explains why 34% of the companies featured in the index have been in operation for over a century, while 85% have sustained their businesses for more than 50 years. Leading the ranking is a Japanese firm with a legacy spanning more than 400 years, while two European companies boast over 300 years of uninterrupted operation.