Priner Serviços Industriais S.A (PRNR3) fair value: what the stock is really worth
As of Nov 6, 2026: fair value (intrinsic value) of Priner Serviços Industriais S.A stock BRL 32.05, price BRL 13.40, upside +139.2%, quality 32 out of 100. Rating: strongly undervalued. Calculated from audited financials with 14 of our 26 valuation models and 37 quality factors, updated daily.
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Priner Serviços Industriais S.A
PRNR3 · SAThe stock costs 58% less than our calculation considers fair.
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Price vs Fair Value
White line = price, green steps = our fair value per fiscal year. As of Nov 8, 2026.
How to read this chart
60‑month range R$4.82 – R$22.60 · fair‑value band R$19.44 – R$51.80 · the R$13.40 price screens below the R$32.05 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). 1 fiscal year is left out: there the valuation rested on only a fraction of the usual models. As of Nov 8, 2026.
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Company profile
Priner Serviços Industriais S.A. provides industrial, infrastructure, integrity engineering, and inspection services in the petrochemical, pulp and paper, steel, offshore, naval, mining, and infrastructure sectors in Brazil.
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The company provides access solutions, including design, planning, assembly and rental of access equipment, tube and clamp and modular scaffolding systems, suspended scaffolding and the web prinerdeck platforms, tension netting system, and rope access; mechanical and manual surface treatment, abrasive and wet blasting, ultra-high-pressure water jetting (UHP); weather protection, passive fire protection(PFP), leak sealing, hot and cold thermal insulation, acoustic insulation, and process heating, and refractory lining, as well as civil maintenance, boilermaking; chemical analysis, metallographic analysis, corrosion testing, field solutions, procedure and welder qualification, and failure analysis, anchored retaining walls, soil nailing, shotcrete, soil treatment, and load testing; pressurized habitat solutions; non-destructive testing, inspection of equipment and facilities, welding engineering, advanced engineering, materials engineering and laboratory services, training and consulting, inspection software, and tank inspection services.
It also offers conventional, removable and reusable, PFP, hot and cold insulation, and thermoplastic coating; industrial park; inspection and RBI, finite element analysis, and fracture mechanics.
In addition, the company provides CIPP, Point repair, Steam curing process, pressurized networks, and UV Line curing process; and resin injection, gallery plugging, structural repair and reinforcement, waterproofing, hydrodemolition, and priner soil inspection.
The company was formerly known as Mills SI Serviços Industriais S/A and changed its name to Priner Serviços Industriais S.A. in 2016. The company was founded in 1982 and is headquartered in Rio de Janeiro, Brazil.
Stock analysis
Priner Serviços Industriais S.A (PRNR3) currently trades at R$13.40, while our model-based Fair Value estimate is R$32.05, implying the stock looks roughly 58% undervalued today.
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Valuation
Bull case: the DCF Models group reads highest at a median of R$33.50 per share, and 11 of the 14 models we run sit above the R$13.40 price.
Bear case: the Earnings-Based group reads lowest at R$4.76, and 3 of the 14 models stay below the price. Data coverage for this calculation is medium.
Scenario range: R$19.44 (bear) to R$51.80 (bull), the price of R$13.40 sits below 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 32/100 (below-average quality), in the Industrials sector.
Mixed Growth: Revenue is growing, but margins or cash flow do not fully confirm the trend.
Priner Serviços Industriais S.A reported revenue of R$1.6B in FY2025 versus R$433M in FY2021, a compound +37.8%/yr. Reported net income was −R$11.8M in FY2025.
Key figures
Market cap R$764M (≈ $139M) Micro · P/E ratio 18.6 · P/S ratio 0.45 · EPS (TTM) R$0.7200 · Dividend yield 1.7% · Net margin 2.6% · Return on equity 12.2% · Return on assets (EBIT) 9.0% (5-year average).
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 38 out of 100 (low confidence).
What moves the price
The share trades about 41% below its 52-week high and 11% above its 52-week low, currently below its 200-day average.
For context, the median of 10 Industrials peers we cover trades at −42% fair-value upside, at 139%, PRNR3 screens cheaper than that median.
Fair Value models
All 14 models by family
Quality Score breakdown
It rates the business: profits, how they develop, real cash, balance sheet, investing and share count.
Revenue & earnings trend
Growth Forecast
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Compare Priner Serviços Industriais S.A 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.Engineering & Construction · 791 stocks
Valuation Multiplesvs Engineering & Construction median · lower = cheaper
Strength profile in five axes (Snowflake)
Context: sector, industry, market
- Is the Industrials sector expensive or cheap?
- P/E, EV/EBITDA and margins by industry (reference tables)
- P/B ratio by industry
- Net margin by industry
- Piotroski F-Score screener with fair value
- Undervalued stocks: Industrials
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
Similar stocks
10 more Engineering & Construction stocks, each showing price versus our Fair Value estimate.
| Stock | Price | Fair Value | vs Fair Value | Compare |
|---|---|---|---|---|
| Vinci SA DG | €111.60 | €186.68 | +67% | vs PRNR3 |
| Comfort Systems USA, Inc FIX | $1,018 | $1,119 | +10% | vs PRNR3 |
| EMCOR Group EME | $608.45 | $524.14 | −14% | vs PRNR3 |
| ACS, Actividades de Construcción y Servicios, S.A ACS | €87.00 | €62.21 | −28% | vs PRNR3 |
| Samsung C&T Corporation 028260 | 273,500 KRW | 159,702 KRW | −42% | vs PRNR3 |
| Larsen & Toubro Limited LT | ₹4,118 | ₹2,302 | −44% | vs PRNR3 |
| HOCHTIEF Aktiengesellschaft HOT | €365.60 | €203.86 | −44% | vs PRNR3 |
| APi Group APG | $40.87 | $19.20 | −53% | vs PRNR3 |
| Ferrovial N.V FER | $58.71 | $23.06 | −61% | vs PRNR3 |
| Quanta Services, Inc PWR | $540.90 | $162.41 | −70% | vs PRNR3 |
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Key figures of Priner Serviços Industriais S.A
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