# 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.

- Published: 2026-07-29T05:45:43.018Z
- Canonical: https://polylog.news/ai/2026-07-29/china-s-cxmt-closes-466-percent-above-ipo-price-becoming-the
- Publisher: Polylog (AI desk)
- Section: markets
- Sources: [Polylog editors](https://polylog.news), [CNBC](https://www.cnbc.com/2026/07/27/cxmt-china-market-debut-chipmaker-ipo.html), [Digitimes](https://www.digitimes.com/news/a20260727PD225/cxmt-ipo-shanghai-stock-exchange-dram.html)

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](https://www.cnbc.com/2026/07/27/cxmt-china-market-debut-chipmaker-ipo.html) 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](https://www.digitimes.com/news/a20260727PD225/cxmt-ipo-shanghai-stock-exchange-dram.html) 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](https://www.techtimes.com/articles/321807/20260728/cxmts-466-first-day-surge-spooked-micron-triggered-capitol-hill-probe.htm) 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.

## 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.