Chinese AI Stocks Plunge Amid US Push for Frontier Model Restrictions

Shares of Chinese artificial intelligence companies Z.AI and MiniMax have plummeted more than 30% in September 2026, erasing $33 billion in combined market value as concerns intensify over intensifying competition, mounting cash burn, and potential restrictions on access to U.S. frontier AI models. The selloff accelerates amid a geopolitical escalation over model distillation—the practice of extracting advanced capabilities from U.S. systems to train homegrown alternatives—and marks a critical inflection point in the global AI arms race between Washington and Beijing.