TL;DR · 30-second read
The Short Version
Nvidia, the world’s biggest maker of chips for artificial intelligence, is paying one of its suppliers in advance to guarantee factory space. That money helps the supplier build the new factories.
The supplier, Amkor, handles a step most people never hear about: packaging, the final assembly that wires a finished chip to its memory and seals it so it can be used. A new $1.3 billion deal in South Korea brings Nvidia’s agreements with Amkor to $3 billion.
Buyers pay up front when something is scarce. For artificial intelligence, that scarce thing now includes the assembly line.
Amkor Technology, a contract chip-packaging and test company, has signed a new $1.3 billion agreement to add capacity in South Korea for Nvidia, TIKR reported. The deal brings Amkor’s multi-year agreements with Nvidia across Arizona and South Korea to $3 billion, and Nvidia is prepaying to lock in that capacity. Amkor shares rose 4.7% on Wednesday after the announcement. The announcement came at 7:30 a.m. ET, about an hour after Nvidia announced new capacity agreements with its supply-chain partners.
The Korea agreement builds on a run of deals. In July, Nvidia agreed to prepay $1.5 billion for Amkor’s Arizona expansion. A month earlier, Amkor signed a 10-year U.S. packaging partnership with Taiwan Semiconductor Manufacturing Company (TSMC). In September, Amkor raised its planned Arizona campus investment to $12 billion. Amkor reports third-quarter results after the market close on October 26.
Executive Summary
The headline number is $1.3 billion. The more telling details are who is paying and when. Nvidia is putting cash into Amkor before the capacity exists, which makes the world’s biggest AI chipmaker a part-funder of its supplier’s buildout. Amkor generated about $1.1 billion of cash from operations in fiscal 2025 and spent $900 million on capital projects. That left roughly $200 million of free cash flow, a thin cushion against a $12 billion Arizona plan.
For the AI infrastructure supply chain, the deal shows that advanced packaging is scarce enough for the largest buyer to pay to reserve it. Advanced packaging is the step that assembles finished chips with their memory into a usable module. The deal does not show that packaging has replaced wafer supply as a constraint, because Nvidia’s announcements that morning covered several supply-chain partners. It does show that packaging is now one of the places where AI accelerator output is being secured with money up front.
“Our partnership with NVIDIA underscores the critical role advanced packaging plays in enabling next-generation AI platforms,” Amkor president and CEO Kevin Engel said in the company’s announcement.
Customer Cash Is Now Funding the Packaging Line
The case for calling Nvidia a co-financier starts with Amkor’s cash flow. Cash from operations has held at about $1.1 billion a year since fiscal 2021. Capital spending, the money that goes into buildings and equipment, climbed to $900 million in fiscal 2025. Free cash flow, the cash left after that investment, came to roughly $200 million. By comparison, the $1.5 billion Nvidia agreed to prepay for Arizona equals about seven and a half years of that free cash flow. The $12 billion Arizona campus plan is roughly sixty times it.
The mechanism is simple. Nvidia hands over cash before Amkor delivers capacity, and Amkor uses that cash to build the capacity. Self-funding an expansion of this size on a short timeline would push Amkor toward borrowing, issuing shares or slowing down. A customer prepayment gives Amkor a third option, though neither company has disclosed the terms, such as how the cash is credited back or what happens if capacity arrives late. The new Korea agreement extends that model beyond Arizona to Amkor’s established South Korean base.
Each side gets something. Amkor shareholders get growth capacity without the full balance-sheet burden. Nvidia gets a reserved place in line at a supplier it cannot easily replace. Amkor’s other customers face a supplier whose newest capacity has been partly paid for by a single buyer.
Why Packaging Is Worth Paying For Early
An AI accelerator is not a single piece of silicon. Processor dies are placed beside stacks of high-bandwidth memory on a shared base so data can move between them fast enough. That assembly takes specialized production lines. A chip that has been fabricated but not packaged cannot ship. When packaging lines are full, finished silicon simply waits.
Buyers prepay when they expect supply to be tight. Nvidia’s willingness to prepay Amkor in both Arizona and South Korea suggests it sees packaging as one of the constraints on how many accelerators it can deliver. The pattern is broader than one customer. Nvidia and TSMC, the two most important companies in AI hardware, both now hold long-term arrangements with Amkor. The TSMC partnership runs 10 years and covers U.S. packaging, which pairs naturally with Amkor’s Arizona buildout.
The evidence supports a limited conclusion. Packaging belongs on the list of AI supply constraints that attract up-front capital. It does not support saying packaging has displaced wafer supply. Nvidia announced capacity agreements with multiple supply-chain partners the same morning, so Amkor’s deal is best read as one front in a wider effort to secure output.
The Trade-Offs of Being a Prepaid Supplier
Prepayment carries obligations. Cash received ahead of delivery has to be earned back by delivering capacity on schedule. Amkor’s growth plans now depend more heavily on executing for a single, very large customer. That concentration helps while AI demand is strong, but it raises the stakes on construction timelines in two countries at once.
Timing also limits how quickly the deal affects results. New packaging capacity takes time to build and qualify. As a result, the agreement is more likely to show up in 2027 and 2028 than in near-term quarters. For data center operators and AI cloud buyers waiting on accelerators, the deal is a sign that supply is being expanded, not an immediate easing.
Other chip designers face a question too. If the largest buyer reserves new packaging capacity with cash, rivals may have to make similar long-term commitments to secure their own allocations. Whether the Nvidia-funded capacity is exclusive has not been disclosed, and that detail would determine how much it tightens the market for everyone else.
What the Market Is Already Pricing
Analysts expected a strong year even before this deal. Consensus estimates put normalized earnings per share, which exclude one-time items, at $2.57 in 2026, up 71% from $1.50 in fiscal 2025, and at $3.30 by 2028. At Tuesday’s close, before the announcement, Amkor traded at 14.9 times forward earnings, slightly below its five-year average of 16.0 times. Much of the earlier decline came in July, when weak third-quarter revenue guidance sent the stock lower.
Caution remains. B. Riley, which rates the stock Neutral, cut its price target to $46 from $65 on Tuesday. After Wednesday’s gain, shares sat near $44. The third-quarter report is management’s first opportunity since July to show whether the Nvidia capacity changes its outlook, and to explain how the prepayments fit into its spending plans.
Background
Amkor Technology is a contract provider of semiconductor packaging and test services. Chip designers and manufacturers hire companies like Amkor to assemble, package and test chips after the silicon has been fabricated. Amkor has long-established operations in South Korea and is building a large campus in Arizona. As AI accelerators have grown more complex, packaging has moved from a back-end commodity step to a capability that determines how many finished chips can ship.
Amkor’s 2026 has been a year of long-term commitments. In June it signed a 10-year U.S. packaging partnership with TSMC. In July Nvidia agreed to prepay $1.5 billion toward its Arizona expansion. In September it raised its planned Arizona investment to $12 billion. Now a $1.3 billion Korea agreement has followed. The same July brought weak third-quarter revenue guidance that pushed the stock lower, which puts extra weight on the upcoming results. Source: Amkor Rises 4.7% on New $1.3 Billion NVIDIA Deal Highlighting the “Critical Role” of Packaging (TIKR.com), coverage of Amkor’s new South Korea capacity agreement with Nvidia and its financial context.Sources