---
title: "IG: what it means · The AI Compute Race · DRYBURGH"
source: https://dryburgh.com/vol1/glossary/ig
description: "IG: The rating agencies' mark of debt safe enough for cautious buyers, written IG. Debt below the line is high yield, or junk. Chapter 10."
---

# IG

What does “IG” mean?

IGSee investment grade.

[Investment grade](https://dryburgh.com/vol1/glossary/investment-grade) The rating agencies’ mark of debt safe enough for cautious buyers, written IG. Debt below the line is high yield, or junk. *Chapter 10.*

From *The AI Compute Race*. [Read the book](https://dryburgh.com/vol1#buy)

## Also discussed in

- Dated test [Chapter 14, the movement downward, toward distress](https://dryburgh.com/vol1/tests#2029-9)

## Sources that use it

- Bank of England, *Financial Stability Report*, July 2026, section on AI infrastructure financing (the five hyperscalers about 3 percent of the stock of US investment-grade debt at end-2025 and more than 15 percent of year-to-date issuance by early May 2026; J.P. Morgan expecting technology to overtake US banks as the largest dollar IG sector by end-2026; Morgan Stanley estimate that more than half of the external financing need could be debt; “just 3% of the stock of outstanding US IG debt at the end of 2025”, but “over 15% of year-to-date issuance” as of early May; the Financial Policy Committee judges that the relatively modest stock of AI companies’ debt at the start of 2026 “has helped to contain the immediate risk to financial stability”, while the fast growth of credit-market activity in the first half of 2026 “is resulting in potential risks building rapidly”). [In the Sources](https://dryburgh.com/vol1/sources/filing#boe-fsr-jul26)
- CoreWeave, Inc., Parent Guarantee and Pledge Agreement, “entered into as of August 7, 2026”, Exhibit 10.2 to the Form 8-K of 10 August 2026 (accession 0001769628-26-000357), beside the credit agreement for DDTL 5.5 (s. 2.1(a): “the Guarantor hereby unconditionally and irrevocably guarantees, as a primary obligor and not merely a surety”; s. 2.1(b): “the maximum liability of the Guarantor hereunder shall in no event exceed the amount that is the lesser of (i) the outstanding Guaranteed Obligations as of such date of determination and (ii) the maximum liability which can be guaranteed by the Guarantor under the Bankruptcy Code or any applicable federal and state requirements of Law relating to fraudulent conveyances, fraudulent transfers or the insolvency of debtors”, a savings clause and no sum; s. 6.9, financial covenants running “until the earlier to occur of (1) an IG Rating Event and (2) Payment in Full”, among them (a) a Total Net Leverage Ratio that “shall not exceed 6.00 to 1.00”, applying “Solely to the extent the same is required under Section 7.01 of the Revolving Credit Agreement”; read 24 October 2026). [In the Sources](https://dryburgh.com/vol1/sources/filing#coreweave-parent-guarantee-aug26)
- Goldman Sachs, “How AI Debt Is Reshaping Credit Markets,” *Exchanges*, Allison Nathan hosting Amanda Lynam, head of credit strategy research, and Zach Ablon, head of the credit sales desk, recorded 3 August 2026, published 5 August 2026 (publisher transcript, every quotation in this row checked against two transcriptions of the audio made on 25 September 2026; “by our estimates,” “nearly $500 billion” and “have actually only been 40% of that” at 3:52.7–4:03, Lynam; the insurers at 7:22–8:13, Ablon, in Q1 “we would have anywhere from, call it, 15 insurance clients coming into the 30-year part of that bond complex with $50 million plus orders. You go towards the end of Q2, and that number was about half as big”, and at 8:10, of this community, insurance and real money as he glossed it, that they “are clearly losing their appetite for this risk”, the some of before this community kept by medium.en and abandoned in a restart by large-v3, so whether he qualified the community is unsettled and the book prints the qualified form; the IG-share figures at 9:01, Ablon: “it was $10 billion of AI-related issuance in IG in ‘24. That was 1% of” year-to-date “supply. $108 billion, I believe, in ‘25. That was about 7%. And this year, we’re at about 18%”, the 18 being 2026 to the 3 August recording; in the same answer, Ablon: “40% of 15-year-plus issuance in IG this year has been by AI companies, or companies that are funding the AI thematic”; absorption at 13:40.6, Lynam: “how much can the US IG market reasonably absorb”; the 17 of 23 at 20:09.6, Ablon, on high yield: “I think 17 out of the 23 sort of data center JV deals are now trading wide to originated yields”; the speakers as the publisher’s transcript names them, read the same from the lower-thirds by Sourcing’s unit; the decodes, medium.en and large-v3, six slices from 190, 420, 540, 545, 780 and 1170 seconds, held in book 1’s Quote audio checks folder of 25 September 2026 with their md5 in its manifest and word tables for four, Sourcing’s pool, INBOX 684 §117; the years 2024 and 2025 spoken as 24 and 25 on every decode where Goldman’s own transcript wrote them out, year-to-date outside the marks because every decode hears year-to-day). [In the Sources](https://dryburgh.com/vol1/sources/interview#gs-exchanges-ai-debt-aug26)
- Christopher A. Sheldon and Tal Reback (KKR Credit & Markets), “Let There Be Compute! Q3 2026 Market Review,” KKR, published 30 September 2026 (“software represents only about 3% of the roughly $1.5 trillion U.S. high yield market, roughly 13% of leveraged loans, and more than 20% of a corporate private credit market of approximately $1.9 trillion”; “software became the largest single detractor from performance across the leveraged finance complex”; “the sell-off was not accompanied by a broad deterioration in underlying fundamentals across the software and services sector”; a lender’s own account of the market it lends into, its figures credited to banks’ research and to indices and to no public record; read on 11 October 2026; AI-linked debt ‘approximately $600 billion, or 6.3% of the U.S. IG market’ on the obligor basis, the narrowest of its four measures, by the ICE index as of 31 July 2026; ‘Investors may therefore be taking meaningful exposure to the theme without having made an explicit portfolio decision to do so.’). [In the Sources](https://dryburgh.com/vol1/sources/research#kkr-let-there-be-compute-q3-2026)
- Deepali Gautam, Johannes Kramer, Harrison Kraus and Aki Yokoyama, “Rising Leverage in the AI Ecosystem,” Background Analysis 1.1 to chapter 1 of the International Monetary Fund’s Global Financial Stability Report, October 2026 (IMF staff, named as the authors of the analysis on its first page; “The rapid emergence of lower-cost open-source AI models, such as Moonshot AI’s Kimi models, could intensify competition and compress margins, undermining the profitability outlook for hyperscalers, semiconductor firms, and other AI-linked companies”, named beside higher interest rates as a trigger that could reprice AI-related assets; no price and no named buyer; over the past year the five hyperscalers’ share of par outstanding in the Bloomberg US corporate investment-grade index “rose by over 3 percentage points to close to 5 percent; on a duration-adjusted basis, their share has risen to more than 6 percent, approaching that of banks, which have historically been the dominant sector for IG bonds”). [In the Sources](https://dryburgh.com/vol1/sources/research#imf-gfsr-oct26-ba11)

And 1 more: [search the Sources](https://dryburgh.com/vol1/sources).

## Related terms

- [Investment grade](https://dryburgh.com/vol1/glossary/investment-grade)

From the glossary of The AI Compute Race.

- [Campuses](https://dryburgh.com/vol1/ledger)
- [Tests](https://dryburgh.com/vol1/tests)
- [Scorecard](https://dryburgh.com/vol1/scorecard)
- [Data](https://dryburgh.com/vol1/data/releases)
- [Chapter by chapter](https://dryburgh.com/vol1/companion)
- [The record at a glance](https://dryburgh.com/vol1/observatory)
- [The machine](https://dryburgh.com/vol1/machine)
- [One campus, four futures](https://dryburgh.com/vol1/hyperion)
- [Glossary](https://dryburgh.com/vol1/glossary)
- [People](https://dryburgh.com/vol1/people)
- [Sources](https://dryburgh.com/vol1/sources)
- [Notes](https://dryburgh.com/vol1/notes)
- [Where the book was wrong](https://dryburgh.com/vol1/corrections)
- [Where its sources were wrong](https://dryburgh.com/corrections?book=vol1)
- [The Paper](https://dryburgh.com/vol1/paper)
- [Consent](https://dryburgh.com/vol1/consent)
- [Who builds and pays](https://dryburgh.com/vol1/parties)

*The AI Compute Race: Five Races, One Machine* is a book by Lee S. Dryburgh, the first volume of THE COMPUTE ECONOMY, published by Dryburgh, an imprint of Contestra OÜ, Tallinn, Estonia; its record closes on 8 November 2026.

[About the book](https://dryburgh.com/vol1)[Tell me when it is out](https://dryburgh.com/vol1#notify)