Non-executive chairman of pharma firm Cipla is another billion dollar gainer. Shares of his generics maker, known for providing affordable medicines, have been on a roll after it launched a generic version of GlaxoSmithKline's anti-asthma inhaler in Germany and Sweden. In February, it broke new ground when it said it would be helping rival Merck to market its HIV drug in India. Eyeing global expansion, it acquired distribution companies in Yemen and Sri Lanka, and a stake in Washington DC-based Chase Pharmaceuticals, which makes drugs for Alzheimer's.
Fast Fact: University of Cambridge, where he studied chemistry, gave him an honorary doctorate of science in June.