Chipmaker CXMT becomes mainland China’s most valuable listed firm
Shares in China’s biggest memory chip maker have surged by more than 470% as they made their debut on the Shanghai Stock Exchange’s tech-heavy STAR Market. The surge has pushed CXMT’s stock market valuation to around 3.3 trillion yuan ($487.3bn; £364.9bn), making it the most valuable listed company in mainland China. The spectacular debut comes…