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CXMT soars 466%, becomes China's top stock

July 27, 2026

Chinese memory chipmaker CXMT jumped 466% in its Shanghai trading debut, becoming China's most valuable listed company at nearly $490 billion.

AP News reports that shares in CXMT, a Chinese memory chipmaker, soared 466% as they began trading on Shanghai's technology board. Fortune corroborates the scale of the jump, and WSJ's headline carries the same 466 percent figure, placing CXMT at the top of China's stock market.

AP News and BBC further corroborate where the surge landed: CXMT is now China's most valuable listed company, with an estimated market capitalization of 3.3 trillion yuan, nearly $490 billion. Both facts hold across every outlet that carries them, with no disagreement on the figure, the ranking, or the timing. The debut surge and the valuation are settled; nothing in this story is contested.

Still developing

The durability of the valuation is the open question: whether CXMT holds the top spot after its first sessions is not yet addressed by the outlets covering the debut.

How settled the reporting is

Reported 100% · Contested 0% · Developing 0%

Sources