AI infrastructure buildout has become a borrowing event of historic scale. US companies have issued nearly $1.7 trillion in bonds so far this year, up 27% from the same period a year ago and more than all of 2025 combined, according to SIFMA data, with hyperscalers, data-center REITs, and power producers leading the charge. BMO Capital Markets rates strategist Ian Lyngen frames the mechanism: “On top of concerns about the growth of government debt, a record pace of corporate bond issuance has added substantial duration supply to U.S. fixed income markets, with consequences for the outright level of yields as well as the shape of the yield curve and term premium.” In plain English, every long-dated bond funding a GPU cluster competes for the same pool of pension, insurance, and sovereign money that buys 30-year Treasuries. The 30-year touched 5.323% on Aug 18, a 19-year high; the 10-year sat at 4.69% and the 30-year at 5.23% on Aug 20.
The loop: AI issuance adds duration supply, raising long-end yields, which lifts the discount rate on future earnings that justify AI valuations. AI borrowing is one factor alongside fiscal supply, inflation uncertainty, and oil. Here are five names that best illustrate the pressure (we profiled seven of the power, cooling, and networking suppliers behind this buildout in a free report you can grab here). For prior coverage of Alphabet’s role, see our earlier piece.
NVIDIA (NVDA): AI Demand Catalyst
NVIDIA (NASDAQ:NVDA | NVDA Price Prediction) is the reason the wave exists. Shares closed at $216.85 on Aug 20 for a market cap above $5.26 trillion at a trailing P/E of 34. Q1 FY27 revenue hit $81.61B (+85.2% YoY) with Data Center at $75.25B, and FY26 free cash flow was $96.6B. NVIDIA finances internally; the balance sheet carries debt/equity of 0.07 and interest coverage of 503x.
Exposure runs downstream. NVIDIA carries $119.0B of supply-related commitments and $30.0B of multi-year cloud service obligations, and its GPU deals with Meta, Anthropic, CoreWeave, AWS, Google, Azure, and Oracle imply hundreds of billions in customer debt issuance. Jensen Huang calls it “the largest infrastructure expansion in human history.” The risk is multiple compression: if higher real yields cool customer capex or squeeze the S&P’s largest weight, NVIDIA participates in a drawdown it helped set in motion.
Digital Realty (DLR): REIT Squeezed on Both Ends
Digital Realty Trust (NYSE:DLR) is the cleanest example of an issuer forced into the market by AI demand. Shares closed at $194.30, up 27.28% YTD. REIT economics are uniquely rate-sensitive: development yields must clear rising debt costs, and the equity trades on a spread to Treasuries. Total liabilities are $23.46B, 2026 development capex guidance was raised to $3.5B to $4.0B, and long-term debt issuance guidance was raised to $1.5B to $2.0B. The company also sold 7.3M shares via its ATM for roughly $1.3B in net proceeds.
CEO Andy Power flagged the pivot to alternative capital: “Using private capital, Digital Realty can scale hyperscale development capacity beyond the limits of our balance sheet.” Reported leverage held at 4.7 times, but joint ventures, ATM equity, and lease-style commitments funding a 1.4 gigawatt, $20 billion construction pipeline can understate the true call on capital. Risk: development yields compressing against a 5.23% 30-year.
Constellation Energy (CEG): Debt-Funded Power
Constellation Energy (NASDAQ:CEG) financed the Calpine acquisition with substantial debt, taking total long-term debt to $17.5B and total liabilities to $63.1B. Shares closed at $272.92, down 22.4% YTD even as the PJM capacity price surged to $329.92/MWd from $53.60/MWd YoY and management raised full-year adjusted EPS guidance to $11.50 to $12.50.
CFO Shane Smith reiterated the constraint: “We are committed to maintaining our strong investment-grade credit metrics.” CEO Joe Dominguez said hyperscaler “projected spending levels for 2026 are nearly 75% higher than last year and continue to be revised upward.” Constellation is a direct beneficiary of AI power demand and a large investment-grade issuer funding nuclear restarts and gas peakers into that demand. The refinancing calculus on a $17.5B debt stack gets harder as long-end yields drift higher, and PJM Reliability Backstop rulemaking remains an execution overhang.
Vertiv (VRT): Investment-Grade at the Margin
Vertiv Holdings (NYSE:VRT) illustrates the AI supplier tapping bond markets from strength. In March, Vertiv completed a $2.1B senior unsecured notes issuance and a new $2.5B revolving credit facility, earning inaugural investment-grade ratings from Moody’s (Baa3) and S&P (BBB-). Q2 revenue was $3.27B (+24.1% YoY) with adjusted free cash flow of $925.3M, and FY26 guidance rose to revenue of $13.8B to $14.2B and adjusted EPS of $6.65 to $6.75. Shares closed at $264.63, up 63.41% YTD but down 13.09% over the last month.
CFO Craig Chamberlin noted “our net leverage is at negative 0.1 times”. CEO Gio Albertazzi described a broadening pipeline across hyperscalers, colo, and neoclouds. Vertiv is healthy enough to issue but competes with hyperscaler paper for the same investor bid, and tariff pass-through remains a supply-chain risk on higher-density AC and DC power architectures.
Palantir (PLTR): Duration Risk in Software Form
Palantir Technologies (NASDAQ:PLTR) has no debt problem. Cash and equivalents sit at $2.03B, with net debt/EBITDA of -0.83. Q2 revenue was $1.94B (+92.8% YoY) with U.S. commercial up 149%, and FY26 revenue guidance rose to $8.15B to $8.16B. The exposure is valuation. Shares closed at $173.96 for a trailing P/E of 149 and price/sales of 68.
With the 10-year real yield at 2.35% and the 30-year real yield at 2.95%, discount rates on far-dated cash flows underwriting that multiple have moved materially. The borrowing that funds AI adoption raises the hurdle the growth story must clear. Palantir’s fundamentals are strong; the risk is that the discount rate its customers help set compresses the multiple faster than earnings can grow into it.
Conclusion
These names face different exposures. NVIDIA and Palantir carry no meaningful debt and face the rate story through valuation. Digital Realty and Constellation are direct issuers whose project economics move with the long end. Vertiv sits in between, investment-grade but leaning on the bond market to fund capacity. Stress has shown up in fixed income more than equities, but the linkage is tightening. As Lyngen put it, “The path of least resistance will likely favor higher long-end rates in the near-term unless there is a slowdown in the market supply of duration, sharp tightening of financial conditions or dimming of the economic outlook.” Watch corporate issuance calendars, PJM rulemaking, and real yields.
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