The allotment status of Tonbo Imaging India's initial public offering (IPO) is expected to be finalised today, on October 21, with the defence electronics company's shares commanding a grey market premium (GMP) of around 73% ahead of their stock market debut on October 23. The Rs 852.18-crore IPO closed for subscription on October 19, attracting bids for 1,15,86,91,464 shares against 85,26,033 shares on offer.