QTS Realty Trust (Blackstone-backed) launched a $3.9 billion bond offering to finance a Microsoft-leased data center campus in Georgia, marketed at a 7.63% yield on 5-year notes. The yield is junk-grade despite expected investment-grade ratings—a stark signal that investors are repricing data center construction risk. Demand exceeded $8 billion, more than twice the offering size, forcing QTS to increase the deal to approximately $4.9 billion from its original target.
This is QTS's second data center bond for Microsoft in 2026. The company sold $4.6 billion of similar bonds in April at tighter yields. The widening spread—from investment-grade pricing to single-B junk levels in four months—reflects rising investor caution about AI infrastructure projects. The repricing occurred alongside a wave of debt issuance from Alphabet, Amazon, and other hyperscalers, making fixed-income investors selectivity on structure and refinancing risk rather than tenant name.
For operators and architects watching capex: the gap between a bond's rating and what it pays tells you how credit markets now view data center leverage. A Microsoft lease is no longer a bond-grade credential by itself. Refinancing risk, bullet structures (principal repayment cliff at maturity), and ambiguity about electricity availability have made investors demand 150+ bps more than equivalent investment-grade debt. This signals slower, more selective capital deployment into brownfield AI compute for 2026–2027.