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The AI Boom Has Become A Bond Market Story
Big Tech is borrowing to build. Here's who gets paid while that debt piles up.
The AI buildout used to run on cash flow. Now it runs on bonds, and that changes who gets paid while yields stay high. Here's how the borrowing binge reaches your portfolio and where to stand.
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Something shifted this quarter, and it isn't the headline you keep reading. The companies building AI stopped paying for it out of pocket and started borrowing for it, just as the 10-year sits near its highest level since 2002.
That collision matters more for your money than another round of oil headlines. When the biggest borrowers in the market are tech giants racing each other, the cost of capital for everyone else moves with them.
From Cash Flow To Credit
For most of this cycle, the hyperscalers paid for data centers out of free cash flow. That cushion is getting thinner. Wall Street now tracks Big Tech's debt growth alongside its capex, and SpaceX is reportedly lining up about $40 billion of financing for its own AI push.
Ray Dalio recently warned that heavy AI borrowing plus rising rates is pushing the boom toward a breaking point. You don't have to agree with him to see the mechanism: every new bond the builders sell competes with Treasuries for the same buyers.
That's the piece most investors miss. The long end isn't just reacting to inflation and the Fed. It's absorbing a wave of private-sector supply on top of heavy government borrowing.
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Why The Bond Market Cares
Three forces are stacking on the long end at once. The Fed is still hiking, with the funds rate at 3.75% to 4.00% after September's move. Oil near triple digits keeps inflation expectations from settling. And AI issuance adds fresh supply that needs buyers.
The AI piece is the new one. Data centers, power plants, and chip fabs are long-lived assets, and long-lived assets get financed with long-dated debt. That's exactly where yields have climbed most, with the 30-year near its highest level since 2002.
Fiscal spending hasn't slowed into the midterms either. Put private and public borrowing together and the long end has a supply problem that rate cuts can't fix, because no cuts are coming.
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Why This Doesn't Fade Quickly
If you're waiting for the 10-year to collapse back under 4%, pack a lunch. Here's what keeps the pressure on.
The buildout is booked, not hypothetical. Turbine and cooling makers are quoting delivery slots far into the future, so the spending, and the financing that comes with it, is already committed.
Issuance keeps coming. Each new data-center financing adds supply at the long end, and every one of them lifts the term premium a little more.
Fed credibility is on the line. Waller has publicly argued for more hikes, and Warsh won't let the market front-run cuts that aren't coming.
Fiscal is still expansionary. Deficit financing into a growth economy is pure fuel for the long end.
And supply, not demand, is the problem. More bonds chasing the same buyers means higher yields, whatever the Fed does next.
What Breaks and What Benefits From Here
The reset is already rotating leadership under the surface. Long-duration growth names you own on 2028 cash flows are getting squeezed as discount rates climb. Highly levered small caps feel it first, which is why your Russell 2000 exposure is lagging. Housing-adjacent names with mortgage sensitivity are stuck in the mud.
Meanwhile, anything that earns more as yields climb, like insurance float and bank reinvestment, collects more every month. And the companies selling the physical gear for the buildout get paid in cash today, whatever happens to the financing later.
Your portfolio needs to look different than it did in June. Full stop.
How to Actually Position
Swap narrative for cash flow. Swap promises for real assets. A few specific pivots.
Lean into reinvestment yield. Insurers earn more when every maturing bond on their balance sheet rolls into new paper, including all that fresh AI debt, at yields north of 5%.
Own the power, not the promise. The companies building turbines and grid gear for data centers have order books that run for years, and they get paid as they ship.
Back the cooling, too. The companies selling power and cooling gear to the hyperscalers get paid before the AI thesis has to prove itself.
Keep a gold hedge. If the AI borrowing binge ends badly, gold is what you want to own that day. Bullion sits roughly a quarter below its high, so you're not paying a peak price for the insurance.
And shorten duration where you can. If you still own long-duration growth with no earnings, trim it.
Top Picks
American International Group (NYSE: AIG) |
GE Vernova (NYSE: GEV) |
Vertiv Holdings (NYSE: VRT) |
Kinross Gold (NYSE: KGC) |
Bottom Line
The Big Takeaway. The AI buildout now runs on borrowed money, and that debt is landing in a bond market already at its highest yields since 2002.
What It Means. The cost of capital now depends on Big Tech's borrowing as much as on the Fed, and that keeps the long end under pressure longer than most portfolios assume.
How To Play It. Own reinvestment yield (AIG), the gear the borrowed money buys (GEV, VRT), and a gold hedge (KGC). Trim long-duration growth that needs cheap money to work.
Setup Scorecard
Entry Zone: AIG $74 to $78, GEV $940 to $1,000, VRT $230 to $245, KGC $22 to $24.
Target: AIG $87, GEV $1,150, VRT $300, KGC $29.
Stop Loss: AIG below $70, GEV below $860, VRT below $200, KGC below $20.
Catalyst Timeline: September CPI Oct 14, FOMC Oct 27-28, GEV, VRT, and KGC Q3 results Oct 28, AIG Q3 results Nov 3, then the midterms.
Confidence Level: Medium-high. The borrowing trend is visible, and the spending is already committed. The risk is a hard landing that pulls yields down faster than new issuance pushes them up.
That’s it for today’s edition—thanks for reading! Reply to this email with any feedback or let me know which macro trends or markets you’d like me to cover next.
Best Regards,
—Noah Zelvis
Macro Notes