TOPNC's stock soared 42.48% in intraday trading during its debut on the Hong Kong Stock Exchange, driven by exceptionally strong investor demand for its initial public offering.

The company's Hong Kong public offering was oversubscribed by approximately 3,764.63 times, while the international offering was oversubscribed by approximately 30.46 times, indicating overwhelming interest from both retail and institutional investors. The IPO was priced at HK$26.39 per share, but shares were set to open at a significant premium of HK$37 each, directly contributing to the sharp price appreciation at market open.

The company raised approximately HK$1.61 billion in net proceeds from the global offering, with cornerstone investors including RBC Global Asset Management, 3W Fund Management, Boyu Capital Management, HHLR Advisors, and UBS Asset Management subscribing to 50% of the offering, providing substantial institutional support for the debut.