Jio Platforms' ₹30,213 crore IPO was fully subscribed within 100 minutes of opening on October 21. The issue was booked 22.19 times, with strong institutional demand driving the bids. MUMBAI: Shares of Jio Platforms made a strong debut on the stock exchanges, listing at a premium of over 21% to the issue price. The blockbuster debut made the billionaire Mukesh Ambani-owned.