AI Borrowers Are 44% of a $135 Billion Convertible Wave — The Boom Is Raising Everyone’s Cost of Capital

AI Borrowers Are 44% of a $135 Billion Convertible Wave — The Boom Is Raising Everyone’s Cost of Capital

*By PriceVia Markets Desk | Published September 20, 2026 | Updated September 20, 2026*

Why this matters now

Goldman Sachs says AI capex and government borrowing are competing for capital, with AI-linked issuers making up 44% of $135 billion in US convertible issuance this year.

Key points

- AI-related borrowers represent 44% of $135 billion in US convertibles this year. - Capital spending among AA-rated issuers rose 65% year on year in the second quarter. - Higher yields can pressure equity valuations if earnings growth fails to match investment.

The numbers

| Metric | Value | Context | |---|---:|---| | Convertible issuance | $135bn | US this year | | AI borrower share | 44% | Of convertibles | | AA capex growth | 65% | Q2 year on year | | Funding channels | Debt + equity | AI build-out | | Equity backdrop | Low risk premium | Late-1990s comparison | | Macro pressure | Public borrowing | Competing demand |

What happened — confirmed facts

Financial Express summarised Goldman Sachs research arguing that AI infrastructure spending is consuming corporate free cash flow and pushing companies toward bond and equity markets. The financing wave coincides with heavy government borrowing for infrastructure, defence and energy. That competition can raise the hurdle rate across sectors, not only for technology companies.

What everyone is watching

Free-cash-flow conversion at the largest AI spenders and the coupons or conversion terms offered by newer borrowers. Whether AI revenue arrives fast enough to offset depreciation, power and financing costs.

What the market may be missing — PriceVia analysis

PriceVia analysis: the AI race is becoming a capital-allocation test. Even profitable leaders can raise the market clearing rate when many borrowers need money at the same time. Convertibles delay the visible choice between debt and dilution; they do not remove it. If share prices weaken, refinancing and dilution risk become more important.

Positive case

AI revenue scales rapidly, utilisation stays high and productivity gains justify the funding wave.

Downside case

Capex outruns cash generation, yields remain high and weak projects face refinancing or equity dilution.

What would change the story

Issuer cash flow, bond spreads, data-centre utilisation and convertible terms would materially change the thesis.

Related stocks and themes

Hyperscalers, AI cloud providers, utilities, data centres, bond markets, convertibles and growth equities.

How to read it

Track cash return on invested capital, not capex alone. Large spending can strengthen a moat or destroy value.

Reader checklist

- Confirm AI free cash flow in a primary disclosure before changing the thesis. - Track convertible terms; headline narratives can move before the underlying evidence. - Track credit spreads; headline narratives can move before the underlying evidence.

PriceVia View

the AI race is becoming a capital-allocation test. Even profitable leaders can raise the market clearing rate when many borrowers need money at the same time.

Sources and timestamps

- [S1 — Financial Express: Goldman AI financing warning](https://www.financialexpress.com/business/industry-who-is-paying-for-ai-boom-race-goldman-sachs-flags-rising-global-cost-of-capital-4343236/) — published 2026-09-20; accessed 2026-09-20T17:10:00+05:30 - [S2 — Goldman Sachs research](https://www.goldmansachs.com/insights) — published 2026-09-20; accessed 2026-09-20T17:10:00+05:30 - [S3 — SIFMA: US securities issuance](https://www.sifma.org/resources/research/) — published 2026-09-20; accessed 2026-09-20T17:10:00+05:30 - [S4 — Federal Reserve: financial accounts](https://www.federalreserve.gov/releases/z1/) — published 2026-09-20; accessed 2026-09-20T17:10:00+05:30

Visual disclosure

Hero visual created specifically for this article. Thumbnail text: “AI’S DEBT BILL”. It is an editorial illustration, not a market-data, legal or regulatory screenshot.

Market-risk disclaimer

This article is for market education and information only. It is not investment advice, a recommendation or a promise of returns. Market prices, policy decisions, deal terms and forecasts can change. Verify the latest primary disclosures and assess suitability and risk independently.

WHAT TO WATCH NEXT

• AI free cash flow
• convertible terms
• credit spreads

Risk context: This article is for market education and information only. It is not investment advice, a recommendation or a promise of returns. Market prices, policy decisions, deal terms and forecasts can change. Verify the latest primary disclosures and assess suitability and risk independently.