The other five companies that have reached the $100 billion market capitalisation milestone are Reliance Industries, Tata Consultancy Services, HDFC Bank, Bharti Airtel, and Infosys. Notably, Infosys reached this milestone in January 2022 but could not maintain that level for long. The other five companies that have reached the $100 billion market capitalisation milestone are Reliance Industries, Tata Consultancy Services, HDFC Bank, Bharti Airtel, and Infosys. Notably, Infosys reached this milestone in January 2022 but could not maintain that level for long. Economic Times