Mersen SA (MRN) fair value: what the stock is really worth
As of Nov 6, 2026: fair value (intrinsic value) of Mersen SA stock €15.54, price €35.70, that is 56.5% below the price, quality 39 out of 100. Rating: strongly overvalued. Calculated from audited financials with 24 of our 26 valuation models and 37 quality factors, updated daily.
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Mersen SA
MRN · PAOur calculation puts a fair price 56% below what the stock costs today.
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Price vs Fair Value
White line = price, green steps = our fair value per fiscal year. As of Nov 7, 2026.
How to read this chart
60‑month range €16.40 – €43.96 · fair‑value band €13.46 – €16.83 · the €35.70 price screens above the €15.54 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Nov 7, 2026.
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Company profile
Mersen S.A. manufactures and sells electrical power products and advanced materials in France, North America, rest of Europe, the Asia-Pacific, and internationally. It operates through two segments, Electrical Power and Advanced Materials.
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The company offers fuses, fuse holders and systems, surge protection, accessories, power distribution blocks, IEC fuse switch disconnectors, low-voltage and high power switches, capacitors, cooling, power transfer for rail, isostatic and extruded graphite, bus bar, engineered panels, graphite bursting discs, and heat exchangers, as well as PTFE bellows, pipes, and fittings products and solutions.
It also provides carbon brushes, brush-holders, carbon insulation, SSiC, process technologies, carbon/carbon composite, slip rings, DC protection for EV and batteries, corrosion resistant materials, brush gear assembly housing, signal and power transfer systems, dust collectors, industrial current collectors, and power stacks, as well as columns, reactors, and pressure vessels products and solutions.
In addition, the company offers simulation tools, on-site maintenance, power stack design optimization, motor maintenance, wind services, electrical test lab, and knowledge center, as well as training for process industries and energy production solutions.
It serves semiconductors; electric vehicles; battery energy storage system; solar; wind; railways and metros; aerospace; chemicals; building and infrastructure; electrical power distribution; and energy conversion.
The company was formerly known as Groupe Carb/one Lorraine SA and changed its name to Mersen S.A. in May 2010. Mersen S.A. was founded in 1889 and is headquartered in Courbevoie, France.
Stock analysis
Mersen SA (MRN) currently trades at €35.70, while our model-based Fair Value estimate is €15.54, 56% below the price, so the stock looks overvalued today.
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Valuation
Bull case: the Multiples group reads highest at a median of €48.95 per share, and 6 of the 24 models we run sit above the €35.70 price.
Bear case: the Dividend Discount group reads lowest at €8.35, and 18 of the 24 models stay below the price. Data coverage for this calculation is medium.
Scenario range: €13.46 (bear) to €16.83 (bull), the price of €35.70 sits above it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.
Quality & growth
The Quality Score stands at 39/100 (below-average quality), in the Industrials sector.
Mixed Growth: Revenue is growing, but margins or cash flow do not fully confirm the trend.
Mersen SA reported revenue of €1.2B in FY2025 versus €923M in FY2021, a compound +6.5%/yr. Reported net income was €12.8M in FY2025, compounding −30.4%/yr from FY2021.
Key figures
Market cap €890M Small · P/E ratio 59.5 · P/S ratio 0.75 · EPS (TTM) €0.6000 · Dividend yield 2.5% · Net margin 1.3% · Return on equity 1.8% · Return on assets (EBIT) 7.1% (5-year average).
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 30 out of 100 (low confidence).
What moves the price
The last reported earnings sit well below what analysts expect (earnings in transition, for example after write-downs or an earnings dip); whether the stock is cheap or expensive hinges on the expected recovery actually arriving. Read the fair value with that caveat.
The share trades about 19% below its 52-week high and 78% above its 52-week low, currently above its 200-day average.
For context, the median of 10 Industrials peers we cover trades at −36% fair-value upside, at −56%, MRN screens richer than that median.
Fair Value models
All 24 models by family
The fair value above starts from this blend and is adjusted for dilution from new shares.
Quality Score breakdown
It rates the business: profits, how they develop, real cash, balance sheet, investing and share count.
Revenue & earnings trend
Growth Forecast
Compare Mersen SA with another stock
Price, fair value, quality and upside side by side.
Peer GroupⓘHow this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.Electrical Equipment & Parts · 564 stocks
Valuation Multiplesvs Electrical Equipment & Parts median · lower = cheaper
Strength profile in five axes (Snowflake)
VALUE 0: the price sits above our fair-value range.
Context: sector, industry, market
- Is the Industrials sector expensive or cheap?
- P/E, EV/EBITDA and margins by industry (reference tables)
- PEG ratio by industry
- Revenue growth by industry
- Piotroski F-Score screener with fair value
- Undervalued stocks: Industrials
- Undervalued stocks: French Stocks
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
Similar stocks
10 more Electrical Equipment & Parts stocks, each showing price versus our Fair Value estimate.
| Stock | Price | Fair Value | vs Fair Value | Compare |
|---|---|---|---|---|
| Contemporary Amperex Technology Co 300750 | ¥254.22 | ¥648.35 | +155% | vs MRN |
| Sungrow Power Supply Co 300274 | ¥81.97 | ¥182.32 | +122% | vs MRN |
| NARI Technology Co 600406 | ¥23.86 | ¥29.39 | +23% | vs MRN |
| Vertiv Holdings VRT | $182.86 | $178.64 | −2% | vs MRN |
| Prysmian S.p.A PRY | €101.00 | €64.29 | −36% | vs MRN |
| Legrand SA LR | €129.65 | €82.49 | −36% | vs MRN |
| ABB Ltd ABBN | CHF 66.98 | CHF 29.62 | −56% | vs MRN |
| Samsung SDI Co 006400 | 468,000 KRW | 153,766 KRW | −67% | vs MRN |
| Delta Electronics (Thailand) Public Company DELTA | 177.00 THB | 39.14 THB | −78% | vs MRN |
| LG Energy Solution, Ltd 373220 | 337,500 KRW | 53,325 KRW | −84% | vs MRN |
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Key figures of Mersen SA
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