Jio makes India’s largest-ever stock market debut, raising $3.2bn in IPO. The listing pushed Reliance Group’s combined market capitalisation above ₹30.2 trillion, ahead of the Tata Group’s ₹25.3 trillion. By Vibhuti Sharma and Aditya Kalra MUMBAI, Oct 28 (Reuters) - Shares of billionaire Mukesh Ambani's Reliance Jio Platforms soared 21% in their Mumbai debut on Wednesday, making it.