Jio Platforms listing: Jio Platforms, on Wednesday, made a blockbuster debut at the stock exchanges with a premium of over 21%. Backed by Mukesh Ambani's Reliance Industries Limited (RIL), Jio Platforms has now become the country's second most valuable firm by market capitalisation, trailing only its parent, RIL. Jio Platforms share price closed at ₹1,417.35, up 26.66 % from the issue price on the BSE.