Chinese memory chipmaker CXMT (ChangXin Memory Technologies) skyrockets in Shanghai IPO Chinese memory chipmaker CXMT (ChangXin Memory Technologies) skyrocketed 466% in its Shanghai IPO, driven by AI-fueled demand for memory chips. The company competes with Micron, SK Hynix, and Samsung in the memory chip market. CXMT ChangXin Memory Technologies had a splashy IPO on the Shanghai Stock Exchange, increasing 466% in share value. CXMT makes memory chips in the same market as Micron, SK Hynix, and Samsung. AI demand has made memory chips scarce. CXMT ChangXin Memory Technologies had a splashy IPO on the Shanghai Stock Exchange, increasing 466% in share value. CXMT makes memory chips in the same market as Micron, SK Hynix, and Samsung. AI demand has made memory chips scarce.