Hong Kong stocks opened lower, with the Hang Seng Index down 0.48% and the Tech Index down 0.88%. New listing Yifei Technology (06871.HK) opened 79.18% higher on its first day of trading. The company was nearly 15,000 times oversubscribed during the public offering phase. The share price was HK$30.5, and the grey market closed up nearly 80%.