AI-driven global stock market highs are fueled by debt financing for data centers. $75 billion in AI-focused Big Tech investment grade debt issued in Sep-Oct 2025, double the annual average. Companies like Meta and Oracle lead the charge, with hybrid debt structures and high credit market supply potential for 2026.

Oracle sees record shares surge but rising credit risk. AI-related ‘junk’ bonds enter the high-yield market, with TeraWulf and CoreWeave issuing billions. Private credit plays a growing role in AI data center funding, doubling in 12 months. Asset-backed securities expected to fund AI growth, expanding rapidly but viewed with caution post-2008 crisis.

Read more at Yahoo Finance: Five debt hotspots in the AI data centre boom