BIS WARNS AI-DRIVEN MARKET MOMENTUM IS BECOMING VULNERABLE The Bank for International Settlements says the AI-driven equity rally is showing growing vulnerability as investors question future profitability and leverage rises across major technology firms. BIS said tech-sector borrowing exceeded $1 trillion by 2025, while stressing markets currently show no overall signs of stress. Why markets care: the warning links stretched AI valuations and opaque financing directly to rising financial-stability and bond-market risks.(彭博社)