US Export Control Meant to Cripple China’s AI. But They Created Its Most Valuable Company

When Washington blocked China from buying advanced chips, the goal was to slow Beijing's AI ambitions. It may have accelerated them instead.

CXMT Corp, a memory chipmaker once dependent on foreign technology, debuted on Shanghai's STAR Market last month and surged 466% in a single session. The stock eclipsed Industrial and Commercial Bank of China to become the country's most valuable listed company. CXMT raised $9.8 billion in one of China's biggest IPOs in years, with proceeds going toward the chip capacity Beijing needs to win the AI race.

From Containment to Catalyst

US export controls cut off China's access to the semiconductors that power AI systems. The logic was direct: no advanced chips meant no path to AI leadership. When Washington announced its crackdown on AI chip exports to China, the restrictions targeted Nvidia, AMD and their successors. The result, according to CXMT's trajectory, was that China built rather than bought.

Beijing cleared the runway fast. CXMT went from filing to trading in under eight months through a preliminary review process reserved for strategically vital companies, a pace that normally takes years. When tech stocks slid in July and threatened to derail the debut, regulators and state funds intervened within days to stabilize sentiment.

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