---
title: "Amkor's AI customers prepay $1.9 billion while its 2027 capex above $2 billion stays on its balance sheet"
description: "Amkor's new 10-Q shows about $1.9 billion of customer advance payments due within 12 months, set against a 2027 capital budget framed above $2 billion. Until that cash lands, the AI packaging build sits on Amkor's own balance sheet."
publisher: "The Inference"
section: "Chips"
published: 2026-10-28T15:27:14.130Z
modified: 2026-10-28T15:27:14.130Z
canonical: https://theinference.org/article/amkor-s-ai-customers-prepay-1-9-billion-while-its-2027-capex-above-2-billion-stays-on-its-balance-sheet
language: en
keywords: "Amkor Technology, Advanced Packaging, AI Chips, Capex, Earnings"
---

# Amkor's AI customers prepay $1.9 billion while its 2027 capex above $2 billion stays on its balance sheet

> Amkor's new 10-Q shows about $1.9 billion of customer advance payments due within 12 months, set against a 2027 capital budget framed above $2 billion. Until that cash lands, the AI packaging build sits on Amkor's own balance sheet.

## Twelve customers now pay to queue

[Amkor](https://theinference.org/markets/companies/amkor-technology), the largest US-headquartered provider of outsourced chip packaging and test, posted third-quarter revenue of $1.99 billion on October 26, 2026, flat with a year earlier, and 76 cents a share, two cents under consensus; the fourth-quarter guide sat below the Street too [1][2]. The stock closed up 8.5% at $39.94 the next day anyway [1].

Buyers were paying for a queue: chief executive Kevin Engel said customers see packaging as "becoming one of the key bottlenecks" in AI hardware, and chief financial officer [Megan Faust](https://theinference.org/markets/people/megan-faust) counted [twelve customers on advance-payment deals](https://www.bullished.co/amkor-has-signed-a-dozen-customers-to-advance-payments-as-2027-capex-climbs-76a88bf4/) since 2025, with more in discussion [3][4].

## The filing prices the queue

[The 10-Q filed on October 27](https://www.sec.gov/Archives/edgar/data/1047127/000104712726000052/amkr-20260930.htm) prices it: about $1.9 billion of customer advance payments due within 12 months, plus an October agreement worth about $1.3 billion arriving in 2027 [5]. The filing does not name that customer; Amkor's October 21 [Nvidia](https://theinference.org/markets/companies/nvidia) announcement, [a $1.3 billion South Korea expansion taking their agreements to $3 billion](https://theinference.org/article/nvidia-lifts-amkor-agreements-to-3-billion-on-commitments-it-can-still-change), matches the size and the month [3][6]. Only $547.6 million of prepaid cash sits in contract liabilities today, and $406.3 million of it becomes revenue over one to five years: queue money, not sales [5].

## The build ran ahead of the cash

May brought $1.15 billion of zero-coupon convertible notes due 2031, proceeds pointed partly at capital spending; long-term debt ended September at $2.32 billion against $1.28 billion in December, and unpaid capital bills doubled to $496 million [5]. Nine-month capital spending of $1.24 billion outran $868 million of operating cash flow [1][5]. Faust frames 2027 above $2 billion, with Arizona taking up to 15% of [its $12 billion campus](https://theinference.org/article/nvidia-pays-1-5-billion-toward-amkor-s-us-packaging-build-amkor-s-depreciation-bill-starts-in-2027), Korea $400 million to $450 million and Vietnam about $50 million [3]. The queue is prepaid; the factory, so far, is borrowed.

*Chart: **Capital spending has outrun operating cash in four of the last five quarters** Column chart comparing Amkor's quarterly operating cash flow and capital spending from Q2 2025 to Q3 2026, with capital spending above operating cash flow in four of the last five quarters*

*Quarterly operating cash flow and capital spending, $ billions. Q3 2026 figures are the 10-Q's nine-month totals minus the first half reported in earlier filings. Sources: Amkor SEC filings; Q3 2026 Form 10-Q. [9][5]*

*Chart: **The build outgrew the prepayments booked: debt up $1.0 billion, unpaid capital bills doubled** Range chart comparing Amkor's long-term debt, unpaid capital bills and booked customer prepayments between December 2025 and September 2026*

*Balance-sheet lines in $ millions at December 31, 2025, versus September 30, 2026; customer prepayments are contract liabilities. Source: Amkor Form 10-Q. [5]*

## The margin gain came from materials

Gross margin reached 18.3%, four points above last year, on materials falling from 57.5% of sales to 50.7% while depreciation climbed to 8.6% [1]. Advanced products, the flip-chip and wafer-level work at the heart of the AI story, fell 3% to $1.63 billion, even as computing hit a record 26% of sales, up from 19%, and communications slid to 37% from 51% [1]. Engel blamed the pace of loading a 300-step high-density fan-out line, not supply [7].

*Chart: **Gross margin has climbed more than six points off the Q1 2025 trough** Line chart of Amkor quarterly gross margin from Q4 2024 to Q3 2026*

*Quarterly GAAP gross margin, percent of revenue. Q3 2026 from the earnings release; earlier quarters from Amkor's SEC filings. [1][9]*

## What February decides

Faust calls the balance sheet "solid through 2027," with $3.4 billion of liquidity and debt at 1.7 times EBITDA, and says 2028 may need no new borrowing [3][4]. Needham kept its Buy but cut its target to $55 from $90 on compressed sector multiples, and [Morgan Stanley](https://theinference.org/markets/companies/morgan-stanley) went to $63 from $70 [2][8]. February prices the 2027 bill [3][5]. The tell is whether the $1.9 billion lands as cash before Arizona phase one finishes at the end of 2027 [3][5].

## Takeaway

Twelve customers are paying in advance to reserve AI packaging capacity, but until that $1.9 billion lands as cash, Amkor is funding a 2027 build framed above $2 billion with convertible debt and its own balance sheet.

## Sources

1. [Business Wire via MarketScreener, Amkor Technology Reports Financial Results for the Third Quarter 2026, 26 October 2026](https://www.marketscreener.com/news/amkor-technology-reports-financial-results-for-the-third-quarter-2026-ce785cdcde88f22d)
2. [Benzinga, Amkor Technology Stock Is Gaining Tuesday: What's Going On?, 27 October 2026](https://www.benzinga.com/trading-ideas/movers/26/10/62615898/amkor-technology-stock-is-gaining-tuesday-whats-going-on)
3. [Bullished, Amkor Has Signed A Dozen Customers To Advance Payments As 2027 Capex Climbs (AMKR), 27 October 2026](https://www.bullished.co/amkor-has-signed-a-dozen-customers-to-advance-payments-as-2027-capex-climbs-76a88bf4/)
4. [Transcript Daily, Amkor Technology Q3 Earnings Call Highlights, 27 October 2026](https://transcriptdaily.com/2026/10/27/amkor-technology-q3-earnings-call-highlights.html)
5. [Amkor Technology Form 10-Q for the quarter ended 30 September 2026, SEC, filed 27 October 2026](https://www.sec.gov/Archives/edgar/data/1047127/000104712726000052/amkr-20260930.htm)
6. [MT Newswires via Yahoo Finance, Amkor Technology Expands South Korea Capacity, Total NVIDIA Agreements Reach $3 Billion, 21 October 2026](https://finance.yahoo.com/technology/articles/amkor-technology-expands-south-korea-130207095.html)
7. [Bullished, Amkor CEO Says Slower 25% Computing Growth Was Not About Supply: A 300-Step Line Takes Time To Fill (AMKR), 27 October 2026](https://www.bullished.co/amkor-ceo-says-slower-25-computing-growth-was-not-about-supply-a-300-step-line-takes-time-2ec2b598/)
8. [Benzinga, These Analysts Slash Their Forecasts On Amkor Technology After Q3 Results, 27 October 2026](https://www.benzinga.com/analyst-stock-ratings/price-target/26/10/62619380/these-analysts-slash-their-forecasts-on-amkor-technology-after-q3-results)
9. [Amkor Technology, quarterly figures from its SEC filings, retrieved 28 October 2026](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001047127)


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Amkor's AI customers prepay $1.9 billion while its 2027 capex above $2 billion stays on its balance sheet — The Inference. Canonical: https://theinference.org/article/amkor-s-ai-customers-prepay-1-9-billion-while-its-2027-capex-above-2-billion-stays-on-its-balance-sheet