Mukesh Ambani is the chairman and managing director of Reliance Industries, the world's largest oil refiner and one of the world's most valuable companies.
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9. Steve Ballmer
Microsoft Ownership Stake: 4% ($79.4 billion total)
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8. Sergey Brin
– Co-founder and Board Member: Alphabet (GOOG)– Net Worth: $89.6 billion– Alphabet Ownership Stake: 6% ($75.4 billion total)
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7. Larry Page
– Co-founder and Board Member: Alphabet (GOOG)– Net Worth: $93.6 billion– Alphabet Ownership Stake: 6% ($79.5 billion total)