Morning Edition · Wednesday, July 29, 2026Published at 1:45 AM EDT · New York
China's CXMT Closes 466 Percent Above IPO Price, Becoming the Most Valuable Company Listed on the Mainland
The memory maker raised about 8.56 billion dollars in Asia's largest IPO of the year and briefly overtook Intel in market value, prompting a US congressional inquiry.
ChangXin Memory Technologies (CXMT), China's leading maker of dynamic random-access memory (DRAM), priced its Shanghai STAR Market listing at 8.66 yuan per share and opened at 49.50 yuan. It closed roughly 466 percent higher after reaching an intraday gain near 535 percent. The close valued the company at about 3.65 trillion yuan, or roughly 540 billion dollars, which made it the most valuable company listed on a mainland Chinese exchange, ahead of the Industrial and Commercial Bank of China and above Intel's market value.
The offering raised about 57.92 billion yuan (roughly 8.56 billion dollars), which Digitimes and Chinese state media describe as the largest semiconductor listing in the history of the STAR Market and Asia's largest IPO of 2026. CXMT is central to Beijing's effort to build domestic memory supply as Washington restricts Chinese access to advanced foreign chips and to the high-bandwidth memory used in AI accelerators.
The debut drew a political response abroad. US outlet TechTimes reported that the price surge unsettled Micron and prompted a congressional inquiry into how a sanctioned-adjacent Chinese memory maker attracted this scale of capital. The valuation is based on domestic demand and state-directed investment rather than proven parity with Micron, Samsung, or SK Hynix on leading-edge DRAM and high-bandwidth memory, a difference CXMT has not overcome on independent metrics.
- If true, who benefits
Beijing's chip self-sufficiency drive and CXMT's state backers gain a public-equity funding channel and domestic memory supply, while the framing also serves Micron and US China hawks pressing to extend export controls from chips to capital.
- The nuance
The 466 percent surge and probe are real, but CXMT's own prospectus concentrates spending on commodity DRAM with no high-bandwidth-memory project, so the "central to AI accelerators" and lawmakers' "military asset" and CCP-orchestration claims are US suspicions that outrun the filing.
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What this means
The listing turns Chinese public equity markets into a funding channel for sovereign compute supply. The mechanism is capital. A 540-billion-dollar valuation gives CXMT the financial capacity to expand DRAM and high-bandwidth-memory production that US export controls were meant to constrain, which raises long-run supply competition for Micron and SK Hynix and lowers China's dependence on foreign memory for domestic accelerators. The valuation reflects expectations of future capacity and policy support, not demonstrated leading-edge yield.
What to watch
- Whether CXMT publishes yield and node data on its high-bandwidth-memory lines, which would show real capability rather than valuation momentum.
- The scope and outcome of the US congressional inquiry, since new financing or listing restrictions would signal that Washington is extending controls from chips to capital access.
- Order flow from Chinese accelerator makers to CXMT versus imported memory, a direct measure of domestic substitution.
Observations to monitor, not financial advice.
Synthesized from: Polylog editors · CNBC · Digitimes
Part of a tracked trend
China's Domestic Chip and Memory Buildout
China channels public equity and state capital into domestic memory and semiconductor champions to build a compute supply chain independent of US controls, and more large listings, capacity expansions, and substitution of imported chips follow.
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