Markets Magazine
Hidden Billionaires: How We Crunched the Numbers for Net Worth
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We defined a hidden billionaire as an individual who has a net worth of $1 billion or more and who hasn’t appeared on a major international rich list. (A few of our billionaires have been mentioned in smaller regional rankings.)
When Bloomberg Markets listed billionaires with their families, family members hold a portion of the person’s assets; however, the fortune is ultimately controlled by the individual.