A $42bn senior tranche and an $18bn junior one
Banks working with Broadcom are assembling $60bn of new financing to pay for AI chips, much of it destined for Anthropic, Bloomberg reported on Friday, citing people with knowledge of the matter. The lenders are preparing to send out syndication letters for a $42bn Class A senior-secured tranche. Blackstone is leading a separate $18bn tranche of Class B junior debt, putting in $9bn from its own funds and planning to syndicate the rest.
The deal has not been announced. A representative for Broadcom declined to comment to Bloomberg, and the terms reported are the ones circulating among lenders rather than anything either company has published.
Why the structure matters
Splitting the package into senior and junior classes is the mechanism that makes it sellable. The senior tranche sits first in line if the borrower fails and can therefore be priced for insurers and conservative credit funds; the junior tranche absorbs the first losses and pays more for doing so. Blackstone’s willingness to hold half of the riskier half is the part lenders will read closely, because it is the private-credit market pricing the chance that AI compute contracts are not worth what they are written for.
It is also a signal about where the money for the buildout is now coming from. Hundreds of billions of dollars of debt have already been raised against AI infrastructure, most of it against data centre shells and land. Financing the silicon itself is newer, and it has multiplied this year. In August, Nvidia announced a partnership with six large financial firms, Blackstone among them, to mobilise more than $500bn, including helping customers pay for its chips.
Broadcom, Anthropic and the Nvidia problem
For Broadcom the point is competitive. The company designs custom accelerators for a handful of very large buyers and sells the networking equipment that ties them together, and it is trying to take share from Nvidia at the point where a lab decides what its next cluster is made of. Credit that a customer can draw on to buy Broadcom silicon is a direct answer to Nvidia’s own vendor-financing push.
For Anthropic the point is capacity. The company has disclosed commitments of about $518bn to compute, most of which it cannot walk away from, and is preparing an initial public offering that people familiar with the plans have said could be marketed from the week of 9 November. Its IPO filing already showed that Broadcom had agreed to lend it up to $42bn to finance infrastructure spending.
The thing the market is actually testing
Bloomberg’s reporters describe the financing as closely watched across Wall Street and Silicon Valley for reassurance that investors still want to fund the buildout, at a moment when data centre construction has become politically unpopular and when the Bank of England has started writing AI borrowing into its financial stability record.
That is the real test here, and it is not about Broadcom. A $42bn senior tranche either clears at a price the market accepts or it does not, and the answer will be read as a verdict on whether contracted AI compute is now considered durable collateral. Watch for the syndication letters themselves, for the spread the Class A paper prices at, and for whether any rating agency puts a public grade on it — that is what turned Lambda’s smaller GPU loan this week into a precedent rather than a one-off.
