AI Infrastructure Debt Repricing: What a 5% 10-Year Does to the Capital Stack

The AI buildout met its cost of capital this week, and the number that mattered on October 15 was not a chip company's revenue but the 10-year Treasury at 5.06%, per WSJ market data intraday, with a one-day range of 5.041 to 5.186 percent. When the risk-free rate moves that far in a week, every multi-hundred-billion-dollar capital program built on borrowed money gets repriced at once, and the AI sector's debt stack is the largest fixed-cost position in corporate America. This piece is the second-order read: who absorbs the rate shock, where the financing ladder breaks first, and what it means for the next earnings print.

Key Takeaways Interest cost on a $39 billion neocloud capex plan rises b…