China’s AI stock bubble has already burst, according to a Reuters report on October 26, 2026. The STAR50 index, which tracks top AI and semiconductor companies, has fallen about 40% from its July peak. This drop wiped out roughly $480 billion in market value in less than four months. China’s broader blue-chip CSI 300 index is also down about 20% from June highs. High stock prices, worries about real AI demand, and fears of export limits on Chinese tech equipment caused the crash. Many small investors lost money. The fall hurts China’s plan to push household savings into tech stocks to support its AI goals.
Who: Chinese AI and semiconductor companies (STAR50 index), small/retail investors, Beijing authorities, and global markets watching the fallout.
• What: The AI stock bubble burst — STAR50 down ~40% (erasing ~$480 billion), CSI 300 down ~20%.
• When: Sharp decline from July peak through late October 2026 (reported October 26, 2026).
• Where: China’s stock markets (mainland STAR Market and broader A-shares/H-shares).
• Why: Extremely high valuations, concerns over genuine AI demand, possible foreign bans on Chinese equipment, tax issues, and a speculative rally that went too far.