ChangXin Memory Technologies, known as CXMT, completed mainland China’s second-largest initial public offering when its shares began trading on the Shanghai Stock Exchange’s STAR market. The company’s stock price increased 466% during its first day of trading, giving it a market capitalization of approximately 3.3 trillion yuan, or over $487 billion, making it the most valuable company listed on a mainland Chinese exchange.
CXMT raised at least $8.6 billion from the offering, with shares priced at 8.66 yuan each. The company was founded in 2016 in Hefei and has become one of the world’s largest manufacturers of DRAM memory chips, which are used in artificial intelligence servers, automobiles, smartphones, and personal computers. In the first three months of this year, CXMT reported revenue of 50.8 billion yuan, representing a more than 700% increase compared to the same period in the previous year.
The company’s growth has been fueled by surging demand for memory chips driven by the rapid expansion of artificial intelligence applications globally. According to research firm Counterpoint, CXMT held approximately 8% of the global DRAM market by shipments in 2025, ranking fourth worldwide, while Samsung Electronics, SK Hynix, and Micron Technology held 36%, 29%, and 24% respectively. CXMT’s market share is projected to reach around 11% by 2028.
CXMT operates in a context of intensifying geopolitical competition, as China pursues greater technological self-sufficiency while facing American-led export restrictions on advanced chipmaking equipment and high-bandwidth memory technology. Industry analysts note that restricted access to cutting-edge manufacturing tools remains a significant challenge for the company’s expansion, forcing it to rely on Chinese equipment suppliers. Some U.S. lawmakers have recently urged the Trump administration to prevent American companies from purchasing CXMT’s memory chips on national security grounds, while the Pentagon has identified CXMT as having links to China’s military, a designation Beijing has largely rejected.
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