Siblings Susanne Klatten and Stefan Quandt own almost half of Bayerische Motoren Werke AG. The billionaires are descendants of Guenther Quandt, who built a German industrial empire by, among other things, supplying weapons to the Nazis during World War II. In the years since, the family has established stakes in both Daimler-Benz AG and BMW.
Today, Klatten is Germany’s second-richest person, worth $18.6 billion, with interests in chemicals and carbon production, according to the Bloomberg Billionaires Index. Quandt, who owns part of a logistics company and a homeopathic medicine company, has a net worth of $15.5 billion. Both are members of

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