The surge in Jio Platforms share price on debut powered Reliance Group’s combined market cap past ₹30 trillion and surpassed Tata Group at ₹25 trillion, according to Bloomberg data. Mumbai: Jio Platforms Ltd.'s blockbuster stock market debut has propelled the digital company as well as its parent Reliance Industries Ltd. It also helped Mukesh Ambani’s conglomerate topple Tata Group as India’s largest conglomerate by market capitalisation.