Moody's Warns AI Spending Threatens Big Tech's Credit

Moody's just put a number on the AI capex boom's downside: the ratings agency warned that "unprecedented" spending on AI infrastructure is now threatening the credit quality of the biggest names in tech, with Oracle and CoreWeave facing the sharpest pressure.

Photo by Craftsman Concrete Floors on Pexels

What Happened

Moody's is tracking six companies — Microsoft, Amazon, Alphabet, Meta, Oracle, and CoreWeave — and says the shift from asset-light software businesses to asset-heavy data center operators requires capital spending on a scale the sector has never seen. The agency projects total capex will hit $785 billion in 2026 and climb toward roughly $1 trillion in 2027, with the six largest U.S. hyperscalers alone on pace for around $700 billion this year — nearly six times 2022 levels, according to CNBC's report on the Moody's note.

Rising capital intensity, growing leverage, and off-balance-sheet financing commitments are the specific culprits Moody's flagged as eating into credit quality across the group.

Why It Matters

Not every company on Moody's list is equally exposed. Microsoft, Alphabet, Amazon, and Meta still carry some of the strongest corporate balance sheets in the world and cash flows large enough that Moody's doesn't see their investment-grade ratings at near-term risk. Oracle and CoreWeave are a different story.

Oracle sits at Baa2 with a negative outlook — just two notches above speculative grade — as heavy capex, persistent negative free cash flow, and dividend and interest obligations weigh on the balance sheet. The market is already pricing in that stress: five-year credit default swaps on Oracle's debt climbed to 2.03 percentage points this week, the highest level since CDS records began in 2008. That follows an S&P downgrade to BBB- earlier this month that sent Oracle shares to a 52-week low near $120.39, as I covered in Oracle's Credit Just Got Cut for Its AI Bet. Is Alphabet Next? Oracle's fiscal 2027 capex guidance has since surged to $90-95 billion, well above its prior $60 billion forecast.

CoreWeave, meanwhile, was already sitting in high-yield territory at Ba3 before this warning, financing its GPU fleet through complex private debt structures that Moody's is watching closely as spending accelerates.

Photo by Sathishbv1988 on Pixabay

Who's Affected

• Oracle (ORCL): Highest-risk name among the "strong" cohort — negative outlook, record CDS spreads, and a capex plan that keeps growing faster than cash generation.
• CoreWeave (CRWV): Already junk-rated at Ba3, meaning any further deterioration has less cushion before hitting deeper distress-level pricing in its debt.
• Microsoft, Alphabet, Amazon, Meta: Named in the same Moody's note but explicitly described as retaining top-tier balance sheets — the warning is more about direction of travel than imminent downgrade risk.

Stock reaction has been mixed rather than uniformly negative, which is itself notable. Oracle shares have actually bounced 5% to around $127 in recent sessions even as the credit story darkens, though the stock remains down roughly 35% year-to-date. CoreWeave has been stronger still, up about 8% to near $79 after a Truist upgrade to Buy tied to the view that AI spending is shifting from model training toward inference — a dynamic that could ease some of the capex pressure Moody's is flagging, per 24/7 Wall St's coverage of the upgrade.

That divergence between equity and credit markets is the real story here: bond investors are demanding more compensation for the same AI bet that stock investors are still willing to reward, at least for now.

What to Watch Next

The gap between Oracle's Baa2/negative rating and speculative grade is now down to two notches, so the next data point that matters is whether free cash flow deficits narrow or widen when Oracle next reports. For CoreWeave, watch whether the inference-demand thesis Truist is betting on actually shows up in bookings, since that's the offset to the capex burden Moody's is warning about. More broadly, keep an eye on whether Microsoft, Alphabet, Amazon, or Meta start showing any of the same leverage or free-cash-flow strain — Moody's named them in the same report even while saying their ratings aren't at immediate risk, and that's the kind of language that can shift quickly if capex guidance keeps climbing across earnings seasons.

This is not financial advice — always do your own research before making investment decisions.

The takeaway: Moody's isn't calling for immediate downgrades across the board, but it is drawing a clear line between the hyperscalers with balance sheets big enough to absorb a trillion-dollar capex wave and the two names — Oracle and CoreWeave — where the math is tighter and the credit market is already pricing in the difference.