Chinese memory chipmaker ChangXin Memory Technologies (CXMT) has seen its shares surge by 466%, propelling it into the ranks of China's most valuable listed companies, second only to tech giant Tencent. The rally underscores the rapid rise of Chinese semiconductor firms as Beijing pushes to build domestic alternatives to foreign memory suppliers amid ongoing US export restrictions on advanced chip technology.

The scale of the jump is striking even by the standards of China's volatile equity markets, with CXMT's valuation now placing it among the very top tier of listed Chinese companies. Further specific details on the trading data, market capitalisation figures and the drivers behind investor demand were not available in the source material.