The majority of Mehta's fortune is derived from his half stake in Torrent Group, a conglomerate in India. The group has three main divisions: Torrent Pharmaceuticals, Torrent Power and Torrent Gas.

Torrent Pharmaceuticals is a producer of cardiovascular, nervous system and diabetology medicines. He owns about 36% of the company, according to a Jan. 12, 2024 filing. Mehta holds the shares directly and through Torrent Investments, a holding vehicle in which the family's of Samir and Sudhir own 50% each, according to a January 2024 filing. Shares held by his wife and two sons are attributed to him in the calculation to reflect his status as chairman.

He also owns a 27% stake in Torrent Power, the group's energy generation unit, directly and through Torrent Investments, according to a Jan. 12, 2024 filing.

Mehta owns 50% of the closely-held Torrent Gas, which reported revenue of 22.9 billion Indian rupee ($278 million) in the year to March 2023, according to its annual report. The company is valued using reported financial results and the average enterprise value-to-Ebit and enterprise value-to-sales multiples of four publicly traded peers: Gujarat Gas Ltd, Mahanagar Gas Ltd, Indraprastha Gas Ltd and GAIL India Ltd.

The value of his cash investments is based on an analysis of dividends, insider transactions, taxes and market performance.

Chintan Trivedi, a spokesperson for the company, didn't respond to a request for comment on the net worth calculation.

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