via Share Market News, BSE/NSE India, Sensex, Nifty | The HinduBusinessLine Unimech Aerospace IPO live updates: The equity shares of Unimech Aerospace and Manufacturing Ltd are making their stock market debut today on the NSE and BSE. The IPO has generated significant interest, with a grey market premium indicating a potential listing price of ₹1,501, nearly 91 per cent above the issue price. However, the grey market premium is not always reliable.