Amkor Technology (STU:AMK) Moat Score: 5/10 (As of Jul. 15, 2026)

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STU:AMK Amkor Technology Inc STU:AMK
73 GF Score
Price €61.67
GF Value €28.38
Valuation Significantly Overvalued
! 6 Warning Signs
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What is Amkor Technology Moat Score?

Amkor Technology STU:AMK +6.29% 73 Moat Score is 5 as of Jul. 15, 2026. GuruFocus rates STU:AMK with a GF Score™ of 73/100 and a GF Value™ of €28.38 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 998 Semiconductors companies, Amkor Technology ranks better than 93.39% on this metric.

Amkor Technology has the Moat Score of 5, which implies that the company might have Narrow Moat - Solid narrow moat.

Amkor Technology has Narrow Moat: Amkor Technology Inc has a solid narrow moat due to its economies of scale in semiconductor packaging and testing. It benefits from strong customer relationships and some proprietary technology, but intense industry competition limits its ability to achieve a wide moat.

Moat Score is a ranking system developed by GuruFocus to assess a company's ability to sustain a competitive advantage, rated on a scale from 0 to 10. It takes into account key factors such as market leadership, cost advantages, network effects, customer switching costs, and more.

The company's Moat Score is based on these criteria:

1. Market leadership and sustainable market share
2. Network effects and significant customer switching costs
3. Valuable intellectual property and patents
4. Strong brand strength and deep customer loyalty
5. Durable cost advantages (e.g., economies of scale, proprietary technology)
6. Significant regulatory barriers and exclusive licenses
7. Superior distribution network
8. Strong and sustainable pricing power
9. Consistent and impactful innovation and R&D capabilities

Based on the research, GuruFocus believes Amkor Technology might have Narrow Moat - Solid narrow moat.

Amkor Technology  (STU:AMK) Moat Score Explanation

The Moat Score ranges from 0 to 10, with 10 as the highest. GuruFocus divided Moat Score into following 8 categories:

Moat Score Moat Level
10Wide Moat - Exceptionally dominant and durable wide moat
8 - 9Wide Moat - Clear and robust wide moat
7Wide Moat - Entry-level wide moat, clearly possessing durable advantages
6Narrow Moat - Strong narrow moat, clearly distinguishable but not wide
5Narrow Moat - Solid narrow moat
4Narrow Moat - Discernible but modest moat
1 - 3No Moat - Very weak/transient advantages
0No Moat - No discernible moat

Amkor Technology Moat Score Related Terms

STU:AMK vs ONTO, NVMI, ENTG: Moat Score Comparison

For the Semiconductor Equipment & Materials subindustry, Amkor Technology's Moat Score, along with its competitors' market caps and Moat Score data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.

Amkor Technology Moat Score vs Semiconductors Industry

For the Semiconductors industry and Technology sector, Amkor Technology's Moat Score distribution charts can be found below:

* The bar in red indicates where Amkor Technology's Moat Score falls into.


STU:AMK
73GF Score
Amkor Technology Inc STU:AMK
Moat Score is just one metric. See GF Score™, valuation, warning signs, and more.
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Frequently Asked Questions Learn more about Moat Score →
What does a Moat Score of 5 mean?
Amkor Technology (STU:AMK) has a Moat Score of 5 as of Jul. 15, 2026. Moat Score is a ranking system developed by GuruFocus to assess a company's ability to sustain a competitive advantage, rated on a scale from 0 to 10. It takes into account key factors such as market leadership, cost advantages, network effects, customer switching costs, and more. According to the industry distribution chart, Amkor Technology ranks #66 out of 998 companies in the Semiconductors industry, placing it in the top 6.6%.
Is Amkor Technology's Moat Score too high?
Amkor Technology's current Moat Score is 5. Based on the distribution chart, Amkor Technology ranks #66 out of 998 companies in the Semiconductors industry, which is in the top quartile — a strong position relative to peers. Overall, Amkor Technology has a GF Score™ of 73/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Amkor Technology's Moat Score compare to ONTO and NVMI?
According to the Semiconductors industry distribution chart, Amkor Technology ranks #66 out of 998 companies for Moat Score. This places Amkor Technology in the top 7% of its industry — outperforming the majority of peers. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Moat Score for a Semiconductors company?
A good Moat Score depends on the Semiconductors industry context. However, Moat Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Moat Score mean?
A high Moat Score can signal that a stock is expensive relative to its fundamentals. Moat Score is a ranking system developed by GuruFocus to assess a company's ability to sustain a competitive advantage, rated on a scale from 0 to 10. It takes into account key factors such as market leadership, cost advantages, network effects, customer switching costs, and more. Amkor Technology's current Moat Score is 5. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Amkor Technology stock overvalued right now?
Based on GuruFocus' analysis, Amkor Technology (STU:AMK) is currently considered Significantly Overvalued. The stock's GF Value™ is €28.38, compared to a current price of €61.67 — trading 117.3% above its estimated fair value. The current Moat Score is 5. Amkor Technology's overall GF Score™ is 73/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Moat Score calculated?
Moat Score is calculated from a company's financial statements. For Amkor Technology (STU:AMK), the current Moat Score is 5 as of Jul. 15, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Amkor Technology (STU:AMK) Overvalued in 2026?

Based on GuruFocus' analysis, Amkor Technology stock appears to be overvalued. The current stock price of €61.67 is trading 117.3% above its estimated GF Value™ of €28.38. GuruFocus considers Amkor Technology to be Significantly Overvalued.

Key valuation signals for STU:AMK:

  • Moat Score: 5
  • GF Value™: €28.38 vs. price of €61.67 (117.3% above fair value)
  • GF Score™: 73/100 with 6 warning signs

No single metric tells the full story. See the STU:AMK stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Amkor Technology Business Description

Other Exchanges AMKR:USAAMKR:Mexico
Address 2045 East Innovation Circle, Tempe, AZ, USA, 85284
Amkor Technology Inc is a OSAT (outsourced semiconductor assembly and test) service provider. It has pioneered the outsourcing of integrated circuit (IC) packaging and test services and is a strategic manufacturing partner for the semiconductor companies, foundries, and electronics original equipment manufacturers (OEMs). The firm's products are organized into two categories namely advanced products that include flip chip, fine pitch bumping, wafer-level processing, advanced SiPs, power modules, and others, and Mainstream products that includes wirebond packaging and testing. The company derives maximum revenue from the advanced products category. The company derives majority of its revenue from Foreign states.
73GF Score

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Moat Score is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€61.67
Price
€28.38
GF Value