The AI data center buildout is on track to be one of the largest infrastructure pushes in US history as a share of the economy, and a growing share of it is borrowed. This page tracks whether that spending is paying off or starting to strain. It pulls together signals from bond markets, lenders, company earnings and global competition, so you can see both the warning signs and the strengths in one place.

Where things stand. Borrowing has become more expensive. The Federal Reserve raised rates on Sept 16, the 10-year Treasury yield is above 5.2%, and the 30-year yield is at its highest level since 2002. Demand for AI is still growing fast, but Nvidia is now giving big customers longer to pay, which makes sales look stronger than the cash actually coming in.

How to read this. The two boxes above sum up the picture. Credit stress asks whether lenders are getting nervous. Demand strength asks whether real customers and real cash are keeping up with the spending. Both can rise at the same time, which means the market hasn't decided yet whether this ends in a boom or a bust. The tables below show the individual signals, each marked green, amber or red. The direction a signal is moving matters more than any single number.

The core idea. Rising interest rates squeeze heavily indebted AI builders the way rising mortgage rates squeeze homeowners who have to refinance. The companies that must keep borrowing to keep building feel it first.

RATES & BORROWING COSTS

Metric	Latest reading	Status	What it means
Fed funds rate	3.75–4.00% (hiked Sept 16)	Rising	A 25bp hike, not a cut. Inflation has stayed above the 2% target for five and a half years. Every floating-rate loan in the AI buildout just got more expensive.
10-year Treasury yield	~5.26%	Elevated	Up from about 4.80% in early September. The base rate every AI bond is priced from, so new borrowing now starts from a much higher floor.
30-year Treasury yield	~5.59%, highest since 2002	Elevated	Long end rising faster than the short end. Data centers are long-lived assets financed with long debt, so this is the rate that matters most for the buildout.

CREDIT INSURANCE (credit default swaps)

Metric	Latest reading	Status	What it means
Nvidia 5yr CDS spread	~81 bps (last print Aug)	Elevated	Set a new peak of 80.77bps in mid-August, up about 90% this year and more than double since late May. This is the most recent publicly reported level.
Oracle 5yr CDS spread	~203 bps	Elevated	Highest in nearly 18 years. More than double Nvidia's. The market is pricing Oracle as the weakest large credit in the buildout.
Nvidia vs. Alphabet CDS	NVDA > GOOGL	Watch	Nvidia's credit risk still prices above Alphabet's, unusual for a company with Nvidia's cash generation.

AI BORROWERS, THE RATE SQUEEZE (sector-wide)

Metric	Latest reading	Status	What it means
AI issuer spread vs. broad market	~115 bps vs 78 bps	Watch	Goldman data. AI-related borrowers pay about 37bps more than the overall investment-grade market, even with strong balance sheets. The gap is the market's price for AI-specific risk.
New-deal pricing drift	Meta DC bond ~7.5%, +0.4pp vs Oct 2025	Rising	A like-for-like comparison of the same issuer, same asset type, a year apart. Amazon also had to pay 18–21bps extra on its longest July bonds. Evidence for the "each deal costs more" pattern.
Big Tech bond issuance	~$220B 2026 YTD, ~$420B projected 2027	Elevated	Versus a $28B yearly average from 2020 to 2024. Goldman projects a 60% jump next year. More supply into a market already demanding higher yields.
Sub-investment-grade AI infrastructure debt	~$125B outstanding (June)	Elevated	Junk-rated neoclouds and data center operators, up $17B in under two months. This is the layer most exposed to rising rates, the adjustable-rate borrowers of the buildout.
Neocloud bonds vs. junk index	~620 bps vs 292 bps (single-B)	Elevated	Neocloud unsecured debt trades at roughly double the spread of similarly rated junk bonds. Lenders see these as riskier than their rating suggests.
Data center bonds by tenant quality	IG tenant 226 bps vs junk tenant 389 bps	Watch	The market is sorting data centers by who pays the rent. A healthy sign of discipline, and the gap to watch. If it widens fast, lenders are fleeing weaker tenants.
Weakest large credit	Oracle BBB−, one notch above junk	Elevated	S&P downgraded in July, citing OpenAI at about half of Oracle's $638B backlog. A further cut would push a major AI builder into junk and force some funds to sell.
Projected AI debt through 2030	~$4.1T (JPMorgan)	Watch	How much financing the buildout may need from debt markets. The higher base rates go, the more this total costs to carry.

PRIVATE LENDERS (publicly traded lending funds)

Metric	Latest reading	Status	What it means
Blue Owl (OBDC) discount to NAV	~22–25%	Wide	Has held in that range all year. Early September reports of Blue Owl marking a loan near zero renewed questions about how private loans are valued.
Software loan markdowns	81% of BDC software loans	Elevated	Share of software loans across BDC portfolios marked down by mid-2026. Suggests industry-wide repricing, not one bad fund.
Blackstone Secured Lending (BXSL)	Two NAV cuts in a row	Watch	Less extreme than OBDC but moving the same direction.

SPEND VS. REVENUE

Metric	Latest reading	Status	What it means
Big five capex, 2026	~$750B, 38% of revenue	Watch	S&P estimate for Alphabet, Amazon, Meta, Microsoft and Oracle. Q3 earnings in late October will show whether guidance keeps climbing.
Cloud revenue growth (Q2)	Google Cloud +82%, Azure +43%, AWS +37%	Strong	All three accelerating with expanding margins. Still the most recent data, next update with Q3 reports in late October.
Nvidia revenue (Q2 FY27)	$96.2B, +106% YoY	Strong	Demand for chips is still doubling year over year. Operating income of $63.7B.
Nvidia free cash flow	$21.3B, down from $48.6B	Deteriorating	Revenue up, cash down $27B. Receivables jumped $22B to $63.1B as Nvidia gave big customers longer to pay, stretching collection from 45 to 60 days. Sales booked, cash not yet in the door.
Nvidia vendor financing	$108.5B in guarantees	Elevated	Guarantees backed by Apollo, BlackRock and Goldman, plus $279B in supply commitments. Nvidia is increasingly financing the customers who buy its chips.
Alphabet free cash flow	Negative	Elevated	First time since its 2004 IPO, alongside 82% cloud growth. One quarter isn't a trend, three in a row would be. Next update comes with Q3 earnings in late October.
Google Cloud backlog	$514B	Strong	Largest contracted order book Alphabet has reported. Real signed demand, not a projection.

CHINA, THE MONETIZATION THREAT

Metric	Latest reading	Status	What it means
Chinese share of model downloads	~41% of Hugging Face downloads	Elevated	Qwen passed 1 billion cumulative downloads, faster than any open model family. Developer mindshare is what US labs need to monetize against.
Capability gap vs. US frontier	~6–8 months, narrowing	Watch	NIST puts DeepSeek V4-Pro about 8 months behind. Not caught up, but the lag is shrinking.
Pricing behavior	Priced for adoption, not margin	Elevated	DeepSeek issues regular price cuts. Directly pressures the pricing power the capex math depends on.
US startup use of Chinese models	~80% use at least one	Elevated	Quiet capture of the building blocks underneath a large share of the US AI ecosystem.

ACCOUNTING TELLS

Metric	Latest reading	Status	What it means
GPU depreciation schedules	4yr → 5yr (Nebius, others)	Watch	Stretching useful life makes current profit look better. Real GPU life may be closer to 3 years given the pace of new chips.
Nvidia days sales outstanding	45 → 60 days	Elevated	Longer payment terms are a classic tell of a seller helping customers afford purchases. Watch whether it keeps stretching.
Moody's sector commentary	Warned on 6 names	Watch	Microsoft, Amazon, Alphabet, Meta, Oracle and CoreWeave flagged for credit pressure tied to AI spending.

GLOSSARY

bps	Basis points. One basis point is 0.01%, so 100 bps equals 1%.
Spread	The extra interest a company pays above the US government rate. A wider spread means lenders see more risk.
Credit default swap (CDS)	Insurance against a company failing to repay its debt. A rising price means investors are more worried.
Investment grade / junk	Credit ratings. Investment grade is considered safe. Junk (high yield) is riskier and pays higher interest.
Hyperscaler	The giant cloud companies building most AI data centers. Amazon, Microsoft, Alphabet, Meta and Oracle.
Neocloud	Newer companies that rent out AI computing power, usually funded heavily with debt.
BDC / NAV	A business development company is a publicly traded fund that lends to private businesses. NAV is the stated value of its loans. Trading below NAV means investors doubt that value.
Free cash flow	Cash left after running the business and paying for new equipment. The money that can actually repay debt.