China’s largest domestic DRAM maker has cleared a critical hurdle on its path to a landmark public listing. ChangXin Memory Technologies (CXMT) received approval from the Shanghai Stock Exchange on May 29 to list on the STAR Market, China’s technology-focused exchange, according to Bloomberg and the Wall Street Journal. The Hefei-based chipmaker is seeking to raise at least 29.5 billion yuan, equivalent to approximately US$4.3 billion, in what would be the second-largest STAR Market IPO since the exchange’s launch in 2019.
The SSE approval is not the final step. CXMT must still register with the China Securities Regulatory Commission (CSRC) before it can proceed to listing. But the exchange-level green light is a significant milestone for a company that has become central to China’s strategy to build a self-sufficient semiconductor supply chain amid sustained US export controls.
How CXMT Plans to Deploy the Capital
The fundraising plan is divided into three tranches, each targeting a distinct stage of CXMT’s expansion. The largest allocation, 13 billion yuan, or approximately US$1.92 billion, is earmarked for phase II wafer fabrication capacity, expanding the company’s ability to manufacture memory chips at volume. A second tranche of 7.5 billion yuan (US$1.11 billion) is designated for memory wafer production-line upgrades, modernizing existing facilities. The remaining 9 billion yuan (US$1.33 billion) is reserved for next-generation DRAM research and development, the technology investment that will determine whether CXMT can close the gap with global leaders.
The capital structure reflects a company at a pivotal stage: large enough to operate at commercial scale, but still investing heavily in the process technology advances that will define its long-term competitiveness. CXMT currently operates three 12-inch fabrication plants in Hefei and Beijing. Its most advanced publicly reported DDR5 product uses a 16-nanometer process, a meaningful achievement for a domestic Chinese chipmaker, though still behind the leading-edge nodes used by Samsung, SK Hynix, and Micron.
The Scale of the Listing in Context
If the over-allotment option is exercised, the CXMT offering could become mainland China’s biggest listing since Cnooc Ltd’s US$5.1 billion float in 2022. It would rank second among all STAR Market IPOs since 2019, behind only SMIC’s 53.2 billion yuan (US$7.85 billion) offering. SMIC, China’s largest contract chipmaker, used its STAR Market proceeds to fund a similar capacity expansion, a template that CXMT appears to be following.
The comparison to SMIC is instructive. SMIC’s IPO in 2020 came at a moment when the company was under US export restrictions and needed domestic capital to fund its independence from American technology. CXMT’s situation is structurally similar. As EastFrontier has reported, China’s domestic chipmakers have seized 41% of the local AI market as Nvidia’s grip loosens, and YMTC has begun its own A-share IPO process amid a memory supercycle. CXMT’s listing would add a third major domestic memory player to China’s public capital markets.
CXMT’s Strategic Position in China’s Memory Ambitions
CXMT was the world’s fourth-largest DRAM maker in 2024, a remarkable achievement for a company that was largely unknown outside China a decade ago. DRAM, or dynamic random-access memory, is the type of chip used in servers, personal computers, and increasingly in AI accelerators, where high-bandwidth memory is a critical performance bottleneck. The global DRAM market is dominated by Samsung, SK Hynix, and Micron, all of which face US restrictions on selling advanced memory to Chinese AI companies.
That restriction creates both a challenge and an opportunity for CXMT. Chinese AI companies that cannot access HBM (high-bandwidth memory) from foreign suppliers are a captive domestic market for whatever CXMT can produce. The IPO proceeds, if deployed as planned, would accelerate CXMT’s ability to serve that demand at scale, and potentially to develop HBM-class products of its own, a goal that would represent a step-change in China’s memory technology capabilities.
The broader context for CXMT’s IPO is the US export control regime that has restricted Samsung, SK Hynix, and Micron from supplying advanced memory to Chinese AI companies. Those restrictions have created a structural demand gap in China’s AI supply chain that CXMT is uniquely positioned to fill. The company’s DDR5 production capability, while not yet at the leading edge of global process technology, is sufficient for a wide range of AI inference applications. As China’s AI model deployment scales, with daily token usage having surpassed 140 trillion by March 2026, the demand for domestic memory at every performance tier will grow proportionally. CXMT’s IPO is as much a story about the structural consequences of the US-China tech war as it is about a single company’s capital markets ambitions.