AI Data Center Debt Spreads Across Bond Markets as Investors Tighten Lending Standards

Massive infrastructure funding for artificial intelligence data centers is now flowing through high-yield bonds, bank loans, and investment-grade debt markets, reshaping global credit dynamics as lenders grow more selective. The five largest U.S. hyperscalers—Alphabet, Amazon, Meta, Microsoft, and Oracle—issued approximately $159 billion in bonds during 2026, up 47 percent year-over-year. Nvidia added $25 billion in its own June bond sale. Meanwhile, even broad-based bond funds hold positions in debt tied to AI infrastructure projects backed by these companies, a sign of how pervasive the financing has become.