ChangXin Memory Technologies (SHA:688825) or CXMT closed at 49.00 yuan per share on its first day of trading on the Shanghai Stock Exchange.
This marked a jump of 466% from the chipmaker's initial public offering price of 8.66 yuan per share.
CXMT is now the most valuable stock in China, according to FactSet data. Previously it was Contemporary Amperex Technology (SHE:300750) or CATL in Shenzhen and Industrial and Commercial Bank of China (SHA:601398) or ICBC in Shanghai.