# China's hottest AI chip stock became its most valuable listed company on day one > Source: > Published: 2026-07-27 04:54:32+00:00 # China's hottest AI chip stock became its most valuable listed company on day one [Business Insider](https://www.businessinsider.com) Chinese memory-chip maker CXMT became the mainland's most valuable listed company, overtaking ICBC after its blockbuster IPO. - China's biggest chip IPO became China's most valuable stock on day one. - AI memory-chip maker CXMT soared over 500% in its Shanghai debut. - CXMT is the world's fourth-largest producer of DRAM chips behind Samsung Electronics, SK Hynix, and Micron Technology. China's largest semiconductor IPO on record instantly produced the mainland market's most valuable listed company, highlighting investors' enthusiasm for Beijing's [AI ambitions.](https://www.businessinsider.com/kimi-k3-ai-model-moonshot-investors-alibaba-cloud-tencent-stock-2026-7) Shares of CXMT Corp., China's largest maker of DRAM memory chips, surged over 500% in under two hours of trade in their debut in Shanghai on Monday. The company previously known as ChangXin Memory Technologies raised 57.92 billion Chinese yuan, or about $8.6 billion, with proceeds potentially rising to 66.6 billion yuan if an overallotment option is fully exercised. It was China's second-largest mainland IPO on record, behind Agricultural Bank of China's 2010 offering. At the opening price of 49.50 yuan — compared with an IPO price of 8.66 yuan — CXMT was valued at about 3.3 trillion yuan, or roughly $487 billion. That made it the most valuable company listed on China's mainland market, overtaking Industrial and Commercial Bank of China. CXMT's blockbuster listing reflects strong demand for [Chinese chip stocks](https://www.businessinsider.com/china-ai-tech-boom-new-billionaires-metax-cambricon-moore-threads-2025-12) as investors bet that domestic manufacturers will benefit from Beijing's effort to reduce the country's reliance on foreign technology amid US export restrictions. Demand for the offering was exceptionally strong, with the retail portion 212 times oversubscribed. As the world's fourth-largest producer of DRAM chips — behind [Samsung Electronics, SK Hynix,](https://www.businessinsider.com/samsung-sk-hynix-have-an-edge-japan-cant-match-kioxia-dealmaker-2026-7) and Micron Technology — CXMT's stock price could have much further to go. Nomura initiated coverage on Monday with a Buy rating and a 116 yuan price target, based on its 2028 earnings estimates. "The global supply of memory is unlikely to ease in the coming years," analysts at Nomura wrote. The bank expects CXMT's share of global DRAM production to rise from about 10% currently to roughly 18% by the end of 2028. However, there are risks, including weaker customer demand, greater domestic competition, and component shortages. "Rising geopolitical tensions between the US and China, which would put CXMT's business development, capacity expansion, and technology migration at risk," Nomura's analysts wrote. It also identified weaker customer demand, greater domestic competition, and component shortages as risks. [Business Insider](https://www.businessinsider.com/cxmt-stock-price-ipo-688825-ticker-shanghai-changxin-ram-chip-2026-7) Get AI news in your inbox Daily digest of what matters in AI.