Mukesh Dhirubhai Ambani (born 19 April 1957) is an Indian business magnate who is the chairman, managing director and largest shareholder of Reliance Industries Limited (RIL), a Fortune Global 500 company and India's second most valuable company by market value. He resides at the Antilia Building, the world's most expensive property. He holds a 44.7% stake in the company. He is the elder son of the late Dhirubhai Ambani and the brother of Anil Ambani.