AI Debt Boom Lifts Borrowing Costs, Squeezes Issuers

The escalating demand for AI infrastructure has triggered a historic wave of corporate bond issuance, with U.S. companies raising nearly $1.7 trillion year-to-date, a 27% increase. This surge in debt supply is contributing to higher long-term yields, with the 30-year Treasury touching a 19-year high of 5.323% on August 18. Analysts note that this increased duration supply competes with traditional Treasury demand, impacting the cost of capital for issuers and potentially affecting the discount rates applied to future earnings.

Companies leading this borrowing trend include hyperscalers, data-center REITs, and power producers. The increased borrowing costs associated with AI investments could put pressure on valuations for companies reliant on future growth. Vertiv issued $2.1 billion in notes after securing investment-grade ratings, while Palantir's high price-to-earnings ratio may face compression due to rising real yields driven by AI borrowing.

### Story Arc / How We Got Here

Energy stocks are powering the AI boom due to escalating power demands from data centers, leading to significant long-term power purchase agreements. This dynamic highlighted the shift in the energy sector towards growth plays and underscored the infrastructure build-out's impact on capital markets. Today's developments show how this demand is further extending into corporate debt markets, directly influencing borrowing costs and company financials.

[Prior coverage at /explore/energy-stocks-power-ai-boom-as-data-centers-drive-demand]