China’s largest memory chip manufacturer, CXMT, saw its shares soar on Monday as it started trading in Shanghai in the country’s largest IPO in recent memory.
The first day of trading saw a 466% increase in CXMT’s shares. With an estimated market valuation of over 3.3 trillion yuan (more than $487 billion), the firm has emerged as the most valuable one listed on a mainland Chinese exchange.
However, that is still less than those of American and South Korean memory chip manufacturers like Micron Technology, SK Hynix, and Samsung Electronics.
ChangXin Memory Technologies, or CXMT, is one of several chipmakers that have made significant profits from the artificial intelligence boom.
As China strives for increased self-sufficiency in cutting-edge technologies and struggles with restricted access to sophisticated chipmaking equipment because of American-led restrictions, its economy is flourishing.
The offering, which was priced at 8.66 yuan ($1.3) per share, helped the company raise at least $8.6 billion when it listed on the Science and Technology Innovation Board (STAR) market of the Shanghai Stock Exchange, which is similar to the Nasdaq.
After Agricultural Bank of China’s $22.1 billion share offering in Shanghai and Hong Kong in 2010, it was the second-largest initial public offering (IPO) in mainland China.
One of the biggest producers of DRAM, or “dynamic random access” memory chips, a type of semiconductor used in everything from AI servers to cars and consumer devices like smartphones and PCs, CXMT was established in the eastern city of Hefei in 2016.
According to Kyle Chan, a fellow at the Brookings Institution and an authority on China’s technology policies, “CXMT plays a critical role in China’s AI push, particularly in the face of U.S. export controls.”
Strong HBM, or high-bandwidth memory chips, a high-performance kind of DRAM, cannot be imported from China due to U.S. limitations.
In the first three months of 2026, the company’s sales increased by more than 700% year over year to 50.8 billion yuan ($7.5 billion) due to surging demand from the rapid rise of AI.
A global shortage of memory chips brought on by the increasing usage of AI has increased the cost of some PCs and smartphones. Chan stated that whether CXMT could assist with the wider deficit is a significant topic.
Chan said that CXMT is thought to be China’s greatest chance of producing its own state-of-the-art HBM chips to power Chinese AI models.
However, it also confronts a number of difficulties, such as supply chain constraints that prevent it from expanding its manufacturing capacity because it has very limited access to the best chipmaking tools available, which forces it to rely on Chinese equipment manufacturers.
CXMT was the fourth-largest DRAM memory chip manufacturer in the world by shipments in 2025, accounting for around 8% of the global market, according to technology research firm Counterpoint Research. Micron contributed for roughly 24%, SK Hynix for 29%, and Samsung Electronics for 36%.
CXMT made up about 9% of all shipments worldwide in the first three months of this year. Counterpoint Research projects that its market share will reach almost 11% by 2028. However, according to the research group, CXMT will probably require a minimum of 15% of the worldwide market in order to remain competitive over time.
“Trade restrictions on tools are remaining as the key challenge for CXMT,” said MS Hwang, a research director at Counterpoint who specializes in memory semiconductors.
Due to worries about national and economic security, several U.S. politicians have also lately urged President Donald Trump’s government to prevent American businesses from purchasing CXMT’s memory chips.
The Pentagon claims that numerous Chinese businesses, including CXMT, have ties to the Chinese military. Most of the time, Beijing has refused such designations.
The $26.5 billion initial public offering (IPO) of South Korea’s SK Hynix on the Nasdaq earlier this month was followed by CXMT’s IPO.
