CXMT Surges Over 500% in Debut to Top A-Share Market as Micron and Other US Chip Stocks Face New Variables

TradingKey - On July 27, China's leading memory chip maker ChangXin Technology (SSE: 688825) officially debuted on the Shanghai Stock Exchange's STAR Market, with its shares highly sought after by investors on its first day of trading. The company's IPO price was 8.66 yuan, and it opened at 49.50 yuan, representing an increase of 471.59% from the offer price; intraday, the stock once slid to 38.11 yuan before rebounding quickly to reach a high of 55.03 yuan. As of the midday close, the stock stood at 54.65 yuan, up 531.06%, with a total market capitalization of approximately 3.66 trillion yuan (about 540 billion USD), making it briefly the most valuable listed company in the A-share market.

ChangXin Technology share price performance, Source: FUTUBULL

ChangXin Technology's trading turnover reached 122.1 billion yuan on the morning of its debut, making it the first single A-share stock to surpass 100 billion yuan in single-day trading turnover. The IPO raised approximately 57.9 billion yuan. If the over-allotment option is fully exercised, the fundraising size could increase to a maximum of approximately 66.6 billion yuan, and the proceeds will be primarily used to expand DRAM memory chip capacity, advance R&D in advanced technologies, and supplement working capital.

As China's largest DRAM manufacturer, ChangXin Technology currently holds a global market share of approximately 8%, ranking behind Samsung Electronics, SK Hynix, and Micron Technology. The company expects its revenue for the first half of 2026 to reach 110 billion yuan to 120 billion yuan, and its net profit attributable to shareholders of the parent company to reach 50 billion yuan to 57 billion yuan, primarily driven by rising memory chip prices, increased sales volume, and improvements in product structure.

For Micron Technology ( MU ), the listing of ChangXin Technology itself will not immediately alter global memory chip supply and demand, but the massive financing will strengthen its capacity expansion and R&D capabilities. ChangXin's rapid expansion in commodity DRAM and the Chinese market could bring about more pronounced competition in terms of price and market share. However, ChangXin still lags behind Micron, Samsung, and SK Hynix in the field of high-bandwidth memory used in AI servers, so its impact on the high-end AI memory market will be relatively limited in the short term.

For U.S. chip equipment companies, ChangXin's capacity expansion originally meant greater equipment demand, but U.S. export restrictions on advanced chip-making equipment to China may divert more of these orders to local Chinese suppliers. If the U.S. further tightens restrictions, the growth expectations of U.S.-listed chip equipment companies in the Chinese market could face pressure. On the other hand, the enthusiastic reception of ChangXin on its debut day also indicates that global capital remains optimistic about the AI-driven memory chip cycle, which could provide some sentiment-level support for U.S. memory chip companies such as Micron.