Nvidia’s guarantees and Broadcom’s newest backstop for AI data center and rack leases can reach $151.5 billion between them, by our sum of the maximum exposures in their filings: $108.5 billion under guarantees at Nvidia, per its 10-Q, and approximately $43 billion under the residual value backstop Broadcom set out in an 8-K on 27 October. That is about 1.9 times the $80.6 billion of cash, cash equivalents and marketable debt securities the two companies last reported, by our arithmetic.
The week tested the larger of the two. The New York Times reported on 13 November that no loans have closed under the $500 billion AI financing effort Nvidia announced with six lenders in August, and The Information reported on 12 November that Nvidia’s interim chief executive, Colette Kress, pushed back as finance chief on a proposed $250 billion credit backstop on behalf of OpenAI. Both filing figures are maximum exposures, not losses.
Business Pill · Concentration Explained
An evergreen Business Engineer explainer on concentration, where a few holdings account for most of the value; here, about 98% of the $151.5 billion stands behind two customers, by our arithmetic. The video teaches the general idea only and does not discuss Nvidia or Broadcom.
The key insight: As we read the filings together, two chip suppliers now stand behind up to $151.5 billion of their customers’ lease payments, about 1.9 times their combined cash, and about 98% of it sits behind two customers, by our arithmetic.
Nvidia’s 10-Q for the quarter to 26 July gives a table of the “maximum gross exposure related to our guarantees, including the SB Energy Corp. guarantees signed in August 2026”: $3.5 billion of land, power and shell guarantees for AI cloud partners and $105.0 billion of SB Energy guarantees, $108.5 billion in total. The $105 billion covers leases for about 4.25 gigawatts at SB Energy’s campus in Pike County, Ohio, on behalf of an affiliate of OpenAI.
Nvidia’s payment obligations are “triggered upon certain tenant defaults”, the 10-Q says, and its guarantees are “limited to defined portions of lease and power payments and not the full cost of the site or all of the tenant’s obligations”. They phase in as each of nine phases of data center construction is completed, the first expected in fiscal 2029.
Broadcom’s 8-K says it arranged for financial partners to take on agreements to buy AI racks based on its custom AI accelerators, and the related leases with “the Company’s customer”, and that it is providing residual value support to a newly formed special purpose vehicle. If the customer defaults, Broadcom’s liability is any difference between 72.5% of the amount owed on the lease and what the racks fetch in a sale; its “maximum potential liability under the Backstop upon the deployment of the AI racks, on an undiscounted basis, is approximately $43 billion”.
Broadcom calls the backstop “a contingent liability the Company believes has a low probability of occurring”. The 8-K does not name the customer.
Last-reported cash against the maximum exposure under AI lease guarantees and backstops: Nvidia’s $108.5 billion of guarantees (10-Q for the quarter to 26 July 2026, including the SB Energy guarantees signed in August) against $56.6 billion of cash, cash equivalents and marketable debt securities; Broadcom’s backstop of approximately $43 billion, undiscounted (8-K, 27 October 2026), against $23,975 million of cash and cash equivalents (10-Q, quarter to 2 August 2026). The $151.5 billion and $80.6 billion sums and the 1.9 times ratio are our arithmetic; maximums are not losses.
The Sum Against the Cash, by Our Arithmetic
Added together, the two maximums come to $151.5 billion. Against them, Nvidia held $56.6 billion of cash, cash equivalents and marketable debt securities on 26 July, and Broadcom held $23,975 million of cash and cash equivalents on 2 August, which its 10-Q lists first among its primary sources of liquidity. That is $80.6 billion in all, and the exposure is about 1.9 times it, by our arithmetic; taken one at a time, the ratio is about 1.9 times at Nvidia and 1.8 times at Broadcom.
Both figures are the maximum each company gives for exposure that builds as construction phases are completed and racks are deployed. Nvidia’s $105 billion was signed in August, after its 26 July balance sheet, and Broadcom’s October backstop came after its 2 August balance sheet, so both sit against the last cash reported. Nvidia also held $42.8 billion of marketable equity securities, which we leave out of the cash figure.
The $151.5 billion is the lower reading. Broadcom’s 10-Q describes an earlier backstop, from June, with a maximum of approximately $29 billion at an 85% threshold, and says “No amounts have been paid under the Backstop”. The 8-K does not say whether the October backstop adds to it; if it does, the total is $180.5 billion, about 2.2 times the cash, by our arithmetic.
The exposure is also concentrated: $148 billion of the $151.5 billion, about 98%, stands behind two customers, the OpenAI affiliate in Ohio at Nvidia and the one customer Broadcom does not name, by our arithmetic.
Who the $151.5 billion stands behind: $105 billion of Nvidia guarantees on behalf of an OpenAI affiliate at SB Energy’s Ohio campus and $3.5 billion for other AI cloud partners (10-Q, quarter to 26 July 2026), and Broadcom’s backstop of approximately $43 billion for one customer it does not name (8-K, 27 October 2026). The 98% share is our arithmetic; Broadcom’s June backstop is not included.
What This Week Tested at Nvidia
The New York Times reported on 13 November, citing three people involved, that the financing initiative is “in flux”: “No loans have closed, and at least one of the six lenders that had agreed to it was on Thursday discussing dropping out, one of the people said”. Nvidia’s 10-Q calls the arrangements memoranda of understanding that “may not lead to definitive agreements”; our piece on the $500 billion plan sets the target against the filing.
The Information reported, citing people with knowledge of the deal discussions, that Kress, as finance chief, pushed back on the proposed $250 billion backstop, and that Nvidia split the deal in August and has so far guaranteed the first part, for around $100 billion in credit support. It also reported that Kress “prioritized figuring out ways to ensure Nvidia’s financial risk wasn’t too concentrated in a handful of companies”. Our piece on the OpenAI backstop sets that report against the $105 billion cap.
The 10-Q says Nvidia also holds “an option, exercisable in our sole discretion, to provide additional credit support in phases for approximately 3.8 additional gigawatts as the site scales”. Our tally of Nvidia’s $169.5 billion of pledges adds its equity and cloud commitments, and our Broadcom backstop piece compares the June and October terms.
The Structural Read
As we read the 10-Q and the 8-K, both exposures are built the same way: they grow as construction phases are completed and racks are deployed, and shrink as the customer pays, so the maximums describe a peak, not the amount at risk today.
As we read this week’s reports beside the 10-Q, the open decisions at Nvidia are the next increments, the 3.8-gigawatt option and the $500 billion financing initiative, rather than the guarantees already signed.
Broadcom Inc., Form 8-K, 27 Oct 2026
“The Backstop is a contingent liability the Company believes has a low probability of occurring, supported by the expectation of a strong profitability trajectory of the customer and the sustaining value of the underlying assets.”
Three Implications
FOR NVIDIA INVESTORS Nvidia reports third-quarter results on 17 November; the guarantee table and the $56.6 billion of cash and marketable debt securities in this piece come from the previous quarter’s 10-Q.
FOR BROADCOM INVESTORS The 8-K does not say whether the approximately $43 billion adds to the June backstop of approximately $29 billion; if it does, Broadcom’s two maximums total $72 billion, by our arithmetic.
FOR AI LABS AND CLOUDS The two largest arrangements cover one OpenAI affiliate and one customer Broadcom does not name; the Times reports that no loans have closed under the $500 billion financing initiative Nvidia announced in August.
The framework argues that the capex race “is a sovereign-scale financing problem dressed in tech-company clothing”.
As we read it, chip suppliers guaranteeing their customers’ leases is one form of that financing, and the $151.5 billion measures how much of it now sits on two suppliers’ balance sheets. The framework does not discuss these filings.
What Is Not Established
The figures are maximums, not expected losses. Nvidia pays only on certain tenant defaults, Broadcom only for any gap between 72.5% of the amount owed and the racks’ sale value after a lease default, and both exposures build over time. Broadcom’s 10-Q put the fair value of the June backstop as not material.
The 8-K does not name Broadcom’s customer or say whether the October backstop adds to the June one. The Times account rests on three people it does not name, and we read two paragraphs of The Information’s paywalled article, shown in a screenshot posted on X. The cash figures predate the largest part of both exposures; Nvidia reports third-quarter results on 17 November, per its 12 November release. We did not contact the companies for this piece.
This Week In The AI Supercycle
The Great Convergence of Capital, Power, and Geopolitics
This week’s issue: for two years the AI build-out was priced as a supply story, and last week as a credit story. This week it was priced as a permission story, and the answer arrived as a cost, not a ban.
Nvidia’s guarantees and Broadcom’s October backstop can reach $151.5 billion between them, about 1.9 times the cash and marketable debt securities the two last reported, by our arithmetic, and about 98% of it stands behind two customers. This week’s reporting concerned the Nvidia side: no closed loans under the $500 billion plan, per the Times, and a finance chief, now interim chief executive, who pushed back on a larger backstop, per The Information.
A note on sourcing. Guarantee terms, the Ohio option and Nvidia’s cash and securities figures come from its 10-Q for the quarter to 26 July 2026, and the interim appointment and results date from its 12 November release, on SEC EDGAR. Broadcom’s October backstop comes from its 8-K of 27 October, and its June backstop and cash from its 10-Q for the quarter to 2 August.
We read The New York Times article of 13 November in full; The Information’s article is paywalled, and we read its headline and two paragraphs shown in a screenshot posted on X by Wall St Engine. The $151.5 billion, $80.6 billion, $180.5 billion and $148 billion sums, the ratios and the 98% share are our arithmetic. We leave out personal material and do not name private individuals. We did not contact the companies for this piece.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
