Jio Platforms’ mega Rs 30,200 crore initial public offering (IPO) is already commanding a Rs 220 premium in the grey market, signalling an indicative gain of nearly 20% over the upper end of its price band even before the issue opens. The strong pre-listing sentiment comes as brokerages recommend subscribing to India’s largest-ever offering, citing Jio’s market leadership, pricing power and multiple growth levers.The IPO is priced at Rs 1,065 - Rs 1,119 a share and is scheduled to open on Oct. 21 and close on Oct. 23.