IPO listings, share price today: Four companies made their stock market debut on Friday, October 23, 2026, but their listing performances varied sharply. Tonbo Imaging India emerged as the clear winner, with its shares listing at a premium of 66% over the IPO issue price. Sahajanand Medical Technologies followed with an 8% premium on the NSE, while Zetwerk Manufacturing Business listed at a more modest premium of around 5%.