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AI spending above $1 trillion puts the Magnificent 7 under bond pressure

Michael Hartnett says the tech giants that once looked like a hedge against fiscal excess are now spending at such a pace that rising bond yields are turning into a new vulnerability. He argues the market threat is bonds, while the public threat is whether voters will keep backing AI.

NBBy Nathan BrooksCorrespondent, Business & Corporate
September 28, 2026, 10:06 AM ET

The numbers come first. Bank of America's Michael Hartnett says the 'Magnificent 7' lost part of their appeal because they once paired huge cash generation with minimal spending. That made Apple, Amazon, Alphabet, Meta, Microsoft, Nvidia and Tesla look like a safer home for capital than government bonds.

Now the same group is moving in the opposite direction. Hartnett says they are spending 'a trillion plus a year on AI capex' and are 'negative cash flow to the tune of $200 billion.' At the same time, Goldman Sachs expects global AI investment to exceed '$1 trillion in 2026,' while JPMorgan Chase CEO Jamie Dimon expects hyperscaler AI spending will hit that level next year.

That shift matters because bond yields are rising. Fortune notes that 10-year Treasuries sit at a near two-decade high, while 30-year Treasuries have not sat at current levels of more than 5.5% since 2002. As yields rise, borrowing costs rise with them, and the tech sector has already run down its cash and begun borrowing heavily in the corporate credit markets.

Hartnett's warning is simple: the Magnificent 7 are becoming 'subservient to the bond market.' If yields or spreads rise too much, he says, the spending slows.

He also ties the issue to public policy. He says higher yields could hurt the wealth effect that has been strong through equities, and he adds that 'there's one objective, which is to beat China at AI.' On that point, he argues officials will try to avoid a disorderly move in the bond market.

The lesson for investors is that free money is no longer the story. Capital is once again demanding discipline, and the market has already noticed. Companies that once impressed Wall Street by hoarding cash now face the same hard reality as Washington: someone has to pay for the bill.

For the taxpayer and the saver, the broader message is even clearer. When spending outruns cash flow, leverage returns. When leverage returns, bondholders regain power. And when bondholders regain power, even the biggest names in American tech discover that market gravity still applies.

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