Amarin (STU:EH3) Moat Score: 4/10 (As of Jul. 16, 2026)

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STU:EH3 Amarin Corp PLC STU:EH3
57 GF Score
Price €12.60
GF Value €10.20
! 3 Warning Signs
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What is Amarin Moat Score?

Amarin STU:EH3 -0.79% 57 Moat Score is 4 as of Jul. 16, 2026. GuruFocus rates STU:EH3 with a GF Score™ of 57/100 and a GF Value™ of €10.20. The stock has 3 warning signs investors should review. Among 1,031 Drug Manufacturers companies, Amarin ranks better than 90.69% on this metric.

Amarin has the Moat Score of 4, which implies that the company might have Narrow Moat - Discernible but modest moat.

Amarin has Narrow Moat: Amarin holds valuable patents for its cardiovascular drug, providing some protection. However, it faces intense competition and lacks strong brand strength or significant customer switching costs, limiting its moat to a modest level.

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 Amarin might have Narrow Moat - Discernible but modest moat.

Amarin  (STU:EH3) 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

Amarin Moat Score Related Terms

STU:EH3 vs SCLX, MIRA, NSRX: Moat Score Comparison

For the Drug Manufacturers - General subindustry, Amarin'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.

Amarin Moat Score vs Drug Manufacturers Industry

For the Drug Manufacturers industry and Healthcare sector, Amarin's Moat Score distribution charts can be found below:

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


STU:EH3
57GF Score
Amarin Corp PLC STU:EH3
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 4 mean?
Amarin (STU:EH3) has a Moat Score of 4 as of Jul. 16, 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, Amarin ranks #96 out of 1031 companies in the Drug Manufacturers industry, placing it in the top 9.3%.
Is Amarin's Moat Score too high?
Amarin's current Moat Score is 4. Based on the distribution chart, Amarin ranks #96 out of 1031 companies in the Drug Manufacturers industry, which is in the top quartile — a strong position relative to peers. Overall, Amarin has a GF Score™ of 57/100, reflecting its overall financial health beyond just this single metric.
How does Amarin's Moat Score compare to SCLX and MIRA?
According to the Drug Manufacturers industry distribution chart, Amarin ranks #96 out of 1031 companies for Moat Score. This places Amarin in the top 9% 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 Drug Manufacturers company?
A good Moat Score depends on the Drug Manufacturers 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. Amarin's current Moat Score is 4. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Amarin stock overvalued right now?
Amarin (STU:EH3) has a current Moat Score of 4. The stock's GF Value™ is €10.20, compared to a current price of €12.60 — trading 23.5% above its estimated fair value. The current Moat Score is 4. Amarin's overall GF Score™ is 57/100 with 3 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 Amarin (STU:EH3), the current Moat Score is 4 as of Jul. 16, 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 Amarin (STU:EH3) Overvalued in 2026?

Based on GuruFocus' analysis, Amarin stock appears to be overvalued. The current stock price of €12.60 is trading 23.5% above its estimated GF Value™ of €10.20.

Key valuation signals for STU:EH3:

  • Moat Score: 4
  • GF Value™: €10.20 vs. price of €12.60 (23.5% above fair value)
  • GF Score™: 57/100 with 3 warning signs

No single metric tells the full story. See the STU:EH3 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Amarin Business Description

Other Exchanges AMRN:USAEH3:Germany
Address 36 Dame Street, 8th Floor, One Central Plaza, Dublin, IRL, D02 K7K5
Amarin Corp PLC is a pharmaceutical company. The company is focused on the commercialization and development of therapeutics to improve cardiovascular, or CV, health and reduce CV risk. Its commercialized product includes Vascepa. The company focuses on treatments to stop cardiovascular disease causing death, by providing patients, doctors and investors with reliable cardiovascular treatment options. Geographically, the company derives maximum revenue from United States.
57GF Score

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

€12.60
Price
€10.20
GF Value