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Blackstone's $63 billion Anthropic deal now points to a high junk rating

The Die Brief Desk, after tradersunion.com

In the $63 billion Project North Star financing, Blackstone now expects Anthropic to carry a high junk rating after its IPO.

Picture from techcrunch.com
Picture from techcrunch.com
Project North Star
deal size$63 billion
power1.5 gigawatts
senior loansmore than $42 billion
junior debt$18 billion
Blackstone junior investment$9 billion
junior yieldmore than 10%
KBRA ratingdouble B plus
Morningstar DBRS ratingdouble B

Broadcom guarantees $42 billion of senior loans. Blackstone funds put $9 billion into the junior debt, which KBRA rates at double B plus.

The financing funds a 1.5 gigawatt lease of Google semiconductors for a plan that spends more than $800 billion through 2045.

The binding constraint is the rating, not the chip lease. If Fitch, Moody's, or S&P leave Anthropic outside investment grade, insurance and pension capital stays out.

No official rating from Fitch, Moody's, or S&P appears in the document. The cash-flow figures needed to price the junior debt without a guarantee are absent.

The shift matters because it narrows the pool of lenders for a multi-decade infrastructure buildout.

After tradersunion.com. We did not report this. The pictures, if any, are theirs.

October 30, 2026 · 1 min
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