Jio Platforms became India’s second-most valuable listed company after debuting on Dalal Street at a 21.36 per cent premium over its issue price. Its market valuation reached Rs 12.50 lakh crore, following an IPO subscribed 22.19 times. Mumbai, Oct 28 (PTI) Jio Platforms Ltd on Wednesday became the second most valuable Indian company by market valuation following a stellar debut on the Dalal.