--- title: "Cerebras filing names Flex and Sanmina to build a 10x ramp; Sanmina's inventory has doubled" description: "Sanmina never named the customer behind the second AI platform inside its fiscal 2027 guidance. Cerebras' November 12 SEC filing names Sanmina as a manufacturer scaling past 10x capacity by year end, and Sanmina's balance sheet is already carrying the cost." publisher: "The Inference" section: "Chips" published: 2026-11-13T17:21:51.491Z modified: 2026-11-13T17:21:51.491Z canonical: https://theinference.org/article/cerebras-filing-names-flex-and-sanmina-as-10x-ramp-builders-sanmina-s-inventory-has-doubled-to-2-6-billion language: en keywords: "Cerebras, Sanmina, Contract Manufacturing, AI Infrastructure" --- # Cerebras filing names Flex and Sanmina to build a 10x ramp; Sanmina's inventory has doubled > Sanmina never named the customer behind the second AI platform inside its fiscal 2027 guidance. Cerebras' November 12 SEC filing names Sanmina as a manufacturer scaling past 10x capacity by year end, and Sanmina's balance sheet is already carrying the cost. The AI chipmaker Cerebras told the SEC who builds its machines, and one line in the filing gives the electronics manufacturer [Sanmina](https://theinference.org/markets/companies/sanmina)'s unnamed AI ramp a multiplier and a deadline. The press release furnished with [Cerebras](https://theinference.org/markets/companies/cerebras-systems)' [November 12, 2026 Form 8-K](https://www.sec.gov/Archives/edgar/data/2021728/000162828026073366/0001628280-26-073366-index.htm) names the contract manufacturers [Flex](https://theinference.org/markets/companies/flex) and Sanmina as scaling it to more than 10 times its manufacturing capacity by the end of this year, with factories to follow in 2027 [1]. Three days earlier, on Sanmina's [fourth-quarter call](https://finance.yahoo.com/markets/stocks/articles/sanmina-sanm-q4-2026-earnings-063316815.html), chief financial officer Jonathan Faust said programs on a second AI platform, alongside its [AMD](https://theinference.org/markets/companies/amd) Helios rack work and won earlier than expected, begin ramping this fiscal year inside fiscal 2027 guidance [2]. He did not name the customer [2]. ## The constraint is racks, not silicon Cerebras chief executive Andrew Feldman puts his bottleneck above the wafer: [TSMC](https://theinference.org/markets/companies/tsmc) has committed enough wafers, the systems use no HBM memory, and the delays in the [OpenAI](https://theinference.org/markets/companies/openai) agreement are "exclusively land, power, shell" [3]. What has to be built is everything around the chip. The CS-4 system enters full production shortly [1]. [Oracle](https://theinference.org/markets/companies/oracle) is buying hardware into its own US data centers, [Microsoft](https://theinference.org/markets/companies/microsoft) is the third hyperscaler signed in six months, and shipments run through at least the first half of 2027, the year Cerebras expects revenue to triple [3]. Every one of those revenue events is a rack Flex or Sanmina has to assemble. ## The bill is already on the balance sheet Faust's numbers show a manufacturer that has paid for the ramp in advance. Inventory net of customer advances has more than doubled in a year, to $2.6 billion [2]. Turns fell to 5.2, and the components segment's gross margin dropped 250 basis points to 12.0% on depreciation from new rack capacity [2]. Fiscal 2027 guidance carries $7.5–9.0 billion of [cloud and AI systems revenue](https://theinference.org/article/sanmina-s-ai-sales-grew-173-its-profit-has-grown-0-2-a-year) [2]. The first quarter gets $1.3–1.5 billion of it, with the acceleration weighted to the second half [2][4]. *Chart: **Sanmina's revenue sat near $8 billion, then guidance puts it above $18 billion** Column chart of Sanmina fiscal-year revenue: $7.92 billion in fiscal 2022, $8.94 billion in fiscal 2023, $7.57 billion in fiscal 2024, $8.13 billion in fiscal 2025, $14.53 billion in fiscal 2026, and a guided midpoint of $18.5 billion for fiscal 2027 with a range of $17.5 to $19.5 billion.* *Fiscal-year revenue, $ billions. FY2022 to FY2025 are as filed; FY2026 includes the ZT Systems acquisition; FY2027 is company guidance, midpoint shown, range $17.5–19.5 billion. Sources: Sanmina annual figures from its SEC filings, retrieved November 13, 2026, and the Sanmina Q4 FY2026 earnings call, November 9, 2026. [7][2]* *Chart: **Sanmina's cash from operations fell 38% in the June quarter while capex kept climbing** Column chart of Sanmina quarterly operating cash flow and capital spending from the September 2023 quarter to the June 2026 quarter; operating cash flow falls from about $0.20 billion in the March 2025 quarter and again in the June 2026 quarter, while capital spending climbs from about $0.02 billion to $0.10 billion.* *Quarterly operating cash flow and capital spending, $ billions, by the quarter each fiscal period ended in; the June 2026 quarter is the latest on file. Source: Sanmina quarterly figures from its SEC filings, retrieved November 13, 2026. [6]* Faust's own defense is that the inventory is bound to firm purchase orders, not bought speculatively, and bookings outran revenue [2]. Firm orders remove the risk that the work does not exist. They do not remove schedule risk, and the schedule now runs through data-center timetables Cerebras itself calls late across the industry, its own included [3]. ## Whose deadline this is No document says outright that Cerebras is that second platform. What the record shows is Sanmina's name in a customer's filing, on a 10x ramp that ends on December 31 [1][2]. Cerebras rose 17.7% in premarket trading on November 13 [5]. It still trades below its $185 IPO price [5]. The market priced the customer's quarter; the middle of the chain is priced by nobody. The fastest tokens on sale today are queued behind racks that have not been built, and the parts are already paid for on Sanmina's balance sheet. If Cerebras exits the year at 10x, that inventory converts in Sanmina's fiscal second half; if the shells run late, Sanmina holds the parts and the margin. The builders carrying that working capital are earning this stretch of the AI chain, and their inventory turns next quarter will show whether the deadline held. ## Takeaway Cerebras' filing puts Sanmina inside a manufacturing ramp of more than 10x by December 31, and Sanmina has already paid for it: inventory net of customer advances at $2.6 billion, turns down to 5.2 and components gross margin off 250 basis points. ## Sources 1. [SEC EDGAR, Cerebras Systems Inc. Form 8-K and Exhibit 99.1, Q3 2026 results, 12 November 2026](https://www.sec.gov/Archives/edgar/data/2021728/000162828026073366/0001628280-26-073366-index.htm) 2. [Motley Fool via Yahoo Finance, Sanmina (SANM) Q4 2026 Earnings Call Transcript, 9 November 2026](https://finance.yahoo.com/markets/stocks/articles/sanmina-sanm-q4-2026-earnings-063316815.html) 3. [StockAnalysis, Cerebras Systems (CBRS) Q3 2026 Earnings Call Transcript, 12 November 2026](https://stockanalysis.com/stocks/cbrs/transcripts/731670-q3-2026/) 4. [TipRanks via The Globe and Mail, Sanmina Earnings Call Signals Strong AI-Led Growth Ahead, 11 November 2026](https://www.theglobeandmail.com/investing/markets/stocks/SANM/pressreleases/8790596/sanmina-earnings-call-signals-strong-ai-led-growth-ahead/) 5. [Yahoo Finance, Cerebras Stock Surges After Microsoft Deal. Can The AI Chipmaker Sustain Its Growth?, 13 November 2026](https://finance.yahoo.com/technology/ai/articles/cerebras-stock-surges-microsoft-deal-135658584.html) 6. [Sanmina, quarterly figures from its SEC filings, retrieved 13 November 2026](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000897723) 7. [Sanmina, annual figures from its SEC filings, retrieved 13 November 2026](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000897723) --- Cerebras filing names Flex and Sanmina to build a 10x ramp; Sanmina's inventory has doubled — The Inference. 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