Amkor Technology, Inc. (AMKR) Stock

Amkor Technology, Inc. (AMKR) is a Technology stock trading at $50.85 (as of 2026-08-20), with a market capitalization of $12.61B and a trailing P/E of 28.9. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

Amkor Technology, Inc. provides outsourced semiconductor packaging and test services, offering turnkey manufacturing such as wafer bumping and probing, wafer back-grind, package design, packaging, and test, including drop shipment. It serves customers in the United States, Japan, Europe, the Middle East, Africa, and other parts of Asia Pacific.

Understand Amkor Technology, Inc.: how it makes money

Amkor Technology provides outsourced semiconductor packaging and test services, it makes money by delivering turnkey packaging and test (including wafer bump, probe, back-grind, packaging, and test plus drop shipment) and related flip-chip products used in smartphones, tablets, and other electronics.

Amkor's profit engine is built on factory output translating into revenue mix, packaging is the large majority of net sales (about 89%), test services are about 11%, and higher-end advanced products are a large share of revenue (about 70%), so utilization and advanced mix are key structural drivers.

Revenue by segment (latest quarter)
Advanced	$1.1B
Mainstream	$0.3B
Test	$0.3B

Business quality (Weak): The inputs provide clear business description and several relevant operating mix and utilization KPIs, but the exact official reportable segment names and boundaries are not explicitly shown here, so the segment breakdown is based only on the provided revenue candidates.

Valuation: At 48× earnings, AMKR trades in line with the Semiconductors average (51×). Note: one-time items can distort reported P/E.

Bull case

Advanced products are a large part of revenue: Advanced products mix is about 70% of net sales, which matters because it can support better revenue quality versus a more basic packaging mix.
Packaging dominates the revenue mix: Packaging is about 89% of net sales, with test services at about 11%, so company performance is strongly tied to its core packaging service execution.

Bear case

High customer concentration risk: Net sales from top ten customers are about 68%, so revenue can be sensitive to demand or decisions from a relatively small group of customers.
Utilization is a known operating sensitivity: Factory utilization (Philippines, mainstream/auto mix) is an explicit KPI candidate, implying results can be pressured if utilization falls.
Operating profitability is modest: For the latest quarter shown, operating margin is 6.0%, indicating limited cushion if costs or pricing tighten.

Valuation — source: SEC EDGAR (first-party)
Price	$50.85
Market Cap	$12.61B
P/E Ratio	28.9
EV / EBITDA	10.7
Price / Book	2.76
Price / Sales	1.78
FCF Yield	1.3%
DCF Value (model)	$11.20
DCF Upside vs Price	-78.0%

Profitability & Growth — source: SEC EDGAR
Revenue (TTM)	$6.71B
Net Margin	5.6%
Revenue Growth (YoY)	27.5%
EPS Growth (YoY)	277.8%
FCF Growth (YoY)	42.6%

Financial Health — source: SEC EDGAR
Altman Z-Score	3.87 (safe)
Piotroski F-Score	4/9 (moderate)

Valuation vs Sector & Industry
Stock P/E	28.9
Sector P/E (Technology)	33.9
Industry P/E (Electronic Equipment)	39.4
vs Sector	-14.8%
vs Industry	-26.6%

Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional Holder	VANGUARD GROUP INC ($620.00M)
Institutional Holders Tracked	10
Congressional Trades (recent)	3

Company
Sector	Technology
Industry	Electronic Equipment
CEO	Kevin K. Engel
Employees	28,300
Country	US
IPO Date	1998-05-01

Related Companies (Business model: Fabless Semiconductors; 8 closest by market cap; US-domiciled)

Data as of 2026-08-20.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.