Treasury yields have climbed to their highest levels since 2007, raising borrowing costs for companies financing the historic AI infrastructure buildout. JPMorgan Chase estimated in June that $4.1 trillion in AI-related debt will be issued through 2030. With the 10-year Treasury yield near 5.17%, up about 1 percentage point since the start of the year, issuers must offer higher returns to attract investors.

Market reactions vary among key players. CoreWeave shares rose almost 8% this week, while Oracle fell 7% for the week and about 30% this year. SoftBank raised $11.1 billion in junk bonds, with yields reaching 9.75% for a seven-year tranche. Hyperscalers like Amazon, Google, Meta, and Microsoft maintain investment-grade ratings, but neocloud providers face tighter lending standards. CoreWeave disclosed that a 100-basis-point rate increase could raise its interest expense by $30 million. Oracle reportedly sent a force majeure notice regarding its New Mexico data center project, though it stated the project remains on schedule.