Broadcom Holds the Risk Behind Anthropic’s BB+ Rating

Kroll Bond Rating Agency scored Anthropic BB+ in June, one notch below investment grade, and that grade became public on October 16 as banks shopped a $60 billion chip package. The cheap slice of that debt still rests on a Broadcom residual-value backstop. The junior slice, which sits on Anthropic’s own credit, is being offered to Blackstone at a 10% coupon.

KBRA and Anthropic declined to comment. Moody’s, S&P Global Ratings and Fitch have not published issuer grades of their own. The letter that leaked is already doing work in the market that will fund the next wave of Google tensor processing units.

KBRA Put Anthropic One Notch Below Investment Grade

Documents reviewed in October show KBRA assigned the Claude maker an issuer rating of BB+ in June, with a stable outlook, and applied the same grade to the junior notes in the then-pending chip financing. BB+ is the top of speculative grade. One step up is BBB-, the floor of investment grade, where many pension funds and insurers are allowed to buy.

On moderate risk of loss due to credit, KBRA’s long-term scale describes BB names as low quality, with fundamental weaknesses. The agency is registered with the SEC as an NRSRO, so the grade is a real regulatory product. It is still not a Moody’s or S&P stamp, which is what the listing will eventually have to attract if Anthropic wants the cheapest institutional money.

THE JUNE GRADE IN FOUR LINES

• The letter: BB+ issuer rating, stable outlook, one notch below investment grade.
• The books: KBRA received revenue, adjusted operating income, a first-quarter annualised run-rate and an internal second-quarter forecast.
• The gaps: Free cash flow and EBITDA were not supplied, so analysts estimated those lines and used a risk score instead of a full financial model.
• The check: Management’s second-quarter forecast at the time was $10.9 billion; actual revenue came in at $11.5 billion.

Some prospective buyers of the unguaranteed June notes had already walked away in early June, saying they had not been given enough financial detail. The rating arrived anyway, on partial figures, and then sat unpublished while Apollo and Blackstone closed the deal.

Broadcom’s Guarantee Is What Makes the Cheap Debt Cheap

The June package was not a conventional corporate bond. Broadcom, Apollo and Blackstone’s credit and insurance arm announced on June 9 that they were launching the AI XPV Platform with an initial $35 billion tranche led by Apollo. The stated aim is more than 20 gigawatts of compute capacity through 2028, using Broadcom XPUs and networking for frontier labs including Anthropic and OpenAI. The first money was meant to fund more than 1 gigawatt for Anthropic at Fluidstack sites from mid-2026.

A special-purpose vehicle buys the chips, including Google TPUs that Broadcom helps design, and leases them to Anthropic. Broadcom signed a residual-value support agreement on the senior notes. If Anthropic misses lease payments, the vehicle sells the hardware; if the sale proceeds fall short of what senior holders are owed, Broadcom covers the gap. Senior money priced at 5.75%. About $4.4 billion of junior debt, with no Broadcom backstop, sold at 8.5%, a gap of 2.75 percentage points for sitting behind the chipmaker.

As of June 30, Anthropic had no debt on its own balance sheet. The compute bill lived in partners and vehicles. S&P Global Ratings still tagged the first AI XPV tranche as credit-negative for Broadcom on June 11, treating the support as a contingent, debt-like exposure on the chipmaker rather than a free marketing flourish.

This strategic Platform with Apollo and Blackstone synchronizes the world’s most sophisticated capital with Broadcom’s advanced technological roadmap to meet this once-in-a-lifetime opportunity by enabling our rapidly scaling customers, starting with Anthropic, to realize their most ambitious AI visions with speed and certainty.

Hock Tan, President and CEO, Broadcom, June 9 platform announcement

Apollo partner Jamshid Ehsani called the June close the largest private financing ever executed and described AI compute as an asset class with contracted cash flows. Wells Fargo ran the A1 bank slice. Goldman Sachs, Bank of America and Morgan Stanley placed the A2 notes. The senior buyers were underwriting Broadcom’s A-minus credit and the resale value of the racks, not Claude’s next model.

Why the New Junior Slice Pays More Than 10%

Wall Street is now assembling a second package of about $60 billion, referred to internally as Project North Star, to fund about 1.5 gigawatts of Google custom TPUs. About $42 billion is senior secured paper with Broadcom support. Bank of America, Citigroup and Morgan Stanley began syndicating that senior slice on October 5. About $18 billion is junior debt with no Broadcom guarantee, led by Blackstone.

People familiar with the talks said Blackstone funds would put in $9 billion, half of the junior slice, against Anthropic’s five-year lease payments. The private-capital firm was offered a 10% coupon, with a still higher total return after new-issue discounts and fees. A name with a similar credit profile pays about 7% in the public market, using the ICE BofA BB US High Yield Index. The other $9 billion of junior paper is expected to be sold later, possibly at a lower yield, once more of Anthropic’s books are in public view.

That 10% coupon is 1.5 percentage points above the 8.5% junior yield from June, and about 3 percentage points above the public BB index. The market is not treating the BB+ letter as a glide path to cheap money. It is charging a premium-junk rate for the layer that actually takes Anthropic risk, while Broadcom’s name still holds down the senior coupon. Banks working the junior book have discussed waiting until after the IPO, when audited figures are supposed to be easier to get.

TWO CHIP PACKAGES, TWO CREDIT STORIES

Lease payments on the new racks start only after 2027 delivery. Until then, investors are holding paper against hardware that is not yet earning its keep, and against a borrower whose free cash flow the first rater never saw.

The SPV Buys the Chips and Anthropic Rents Them

Anthropic does not write a single cheque for the silicon in these structures. Investors fund a vehicle, the vehicle owns the processors, and Anthropic pays rent. Broadcom can be supplier, residual-value guarantor and, through a separate facility, lender at the same time.

HOW THE LEASE MACHINE IS BUILT

• The vehicle: A special-purpose company issues the notes, buys the TPUs and holds title to the racks.
• The tenant: Anthropic leases the compute and the rent is what services the debt.
• The senior shield: Broadcom’s residual-value support covers a shortfall if a defaulted lease and a fire sale of chips do not repay senior holders.
• The junior gap: Junior notes have no that shield, so holders live on Anthropic’s lease payments and, if those fail, on whatever is left after the senior claims.
• The extra line: Anthropic’s IPO prospectus says Broadcom agreed to lend up to $42 billion through convertible notes that can turn into Anthropic shares, a facility distinct from the $42 billion senior North Star tranche, and the company does not expect those notes to be sold before the listing.

The prospectus also flags potential conflicts of interest in Broadcom’s stacked roles. Defaults on certain payments could accelerate a large share of lease obligations while cutting off access to that convertible facility. Anthropic is expected to become Broadcom’s largest compute customer in 2027. Robert Leitao, managing partner at Rothschild & Co, said the financing looks like a concentrated bet on two companies generating enough revenue to carry what has already been arranged.

A $16.8 Billion Quarter Still Has to Service the Stack

At a closed investor day in San Francisco on October 14, Anthropic told prospective shareholders that third-quarter revenue reached $16.8 billion, up 46% from $11.5 billion in the second quarter. First-quarter revenue was $4.8 billion. Combined 2026 sales through September were $33.1 billion. Executives, including chief executive Dario Amodei and chief financial officer Krishna Rao, said the company was profitable on an adjusted basis for a second straight quarter.

The same presentation still has to sit next to a five-year TPU lease of $125.2 billion. The Broadcom convertible facility is sized at about one third of that lease. The $60 billion North Star package is a further claim on the same compute build. Growth also slowed: revenue more than doubled from the first quarter to the second, then rose 46% in the third. Anthropic did not refresh the $65 billion annualised run-rate it had cited at the end of July.

THE 2026 CREDIT CALENDAR

1. June 9, 2026: Broadcom, Apollo and Blackstone launch the AI XPV Platform with a $35 billion first tranche for Anthropic.
2. June 11, 2026: S&P Global Ratings calls the first AI XPV tranche credit-negative for Broadcom.
3. June 30, 2026: Anthropic still shows no debt on its own balance sheet.
4. October 1, 2026: The IPO prospectus discloses the $125.2 billion TPU lease and up to $42 billion of Broadcom convertibles.
5. October 5, 2026: Banks begin syndicating about $42 billion of Broadcom-supported senior loans in the $60 billion package.
6. October 14, 2026: Investor day prints $16.8 billion of third-quarter revenue and a second adjusted profit.
7. October 16, 2026: KBRA’s June BB+ rating becomes public.
8. October 17, 2026: Blackstone is offered a 10% coupon on $9 billion of junior chip debt.

The revenue print is large enough to make the coupons look payable on current run-rate. It is not large enough, on its own, to make junior holders forget that the first rating was built without cash-flow statements, or that the hardware they are financing arrives next year.

What the November IPO Has to Prove

Bankers have discussed a listing after the November midterm elections, with a valuation target of more than $2 trillion. Some prospective investors who sat through the October 14 session have talked about a lower figure after the slower sequential growth. Polymarket still assigned a 70.5% chance of a 2026 listing in posts circulating on October 17. None of that substitutes for the Big Three ratings that life insurers usually need before they treat Anthropic paper as a core holding.

KBRA was not given detailed terms of the convertible notes when it scored the company in June. The junior North Star book is still waiting on public financials. Until those arrive, the 10% coupon is the working price of Anthropic credit, and Broadcom’s residual-value promise is the working price of the senior slice. A break in AI credit would not stay inside one lab’s special-purpose vehicles.

The next test is whether Blackstone’s 10% terms clear, and whether the rest of the $18 billion junior book follows at anything close to that coupon, before Anthropic has to sell shares into a market that has now seen the junk letter.

Disclaimer: This article is news reporting and analysis of Anthropic’s KBRA rating, chip-lease financings and planned listing, and it is for information only. It is not investment advice, a solicitation to buy or sell any security, note or private-credit interest, and it is not a credit opinion on Anthropic, Broadcom, Apollo, Blackstone or any tranche described. Readers should consult a licensed financial adviser or credit analyst before acting on any rating, yield or deal structure mentioned here. Figures, ratings, coupons and deal statuses reflect the documents, company statements and market accounts cited as of the dates given in the piece and may change as syndication, the IPO and later agency reviews proceed.