Jio Platforms’ ₹30,213-crore IPO opens October 21, 23, offering 27 crore fresh shares at a price band of ₹1,065, ₹1,119. Grey market premium ranges ₹148, ₹250, implying an estimated listing price near ₹1,368 and a potential 22.16% listing gain. Retail lots are 12 shares; allotment expected October 26 and listing on October 28.