Spirax Group (SPX) Fair Value & Analysis
Industrials · GB · Market cap 5.1B GBX
Fair value as of: Aug 13, 2026
From 26 valuation models · updated today
Fair value updated Aug 13, 2026, revised from £42.32 to £40.04 (−5.4%) since Jul 19, 2026. Share price +8.4% over the past month.
A solid business, but screening 44% overvalued on our models.
What matters now
- The price sits above even our optimistic bull case (£58.12). The favourable scenario is already priced in.
- Solid but not exceptional quality (65/100) and above fair value, neither a clear bargain nor a standout compounder.
- A fairly wide model range (£24.48 to £58.12) leaves room in how you read the outcome.
Price vs Fair Value (5 years)
White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Aug 13, 2026.
How to read this chart
60‑month range £52.13 – £156.65 · fair‑value band £24.48 – £58.12 · the £71.35 price screens above the £40.04 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Aug 13, 2026.
Analysis
Spirax Group (SPX) currently trades at £71.35, while our model-based Fair Value estimate is £40.04, implying the stock looks roughly 43.9% overvalued today. The Quality Score stands at 65/100 (solid quality), in the Industrials sector. Bear case: priced above our estimate, the market already discounts strong expectations. Bull case: above-average quality can justify a premium, the entry price still matters most (evidence: high).
Over the trailing twelve months, Spirax Group generated revenue of £1.7B at a net margin of 9.6%. Revenue grew 5.1% year over year. It earns a return on equity of 13.5%. Net debt stands at £655M. Fundamentals as of Aug 13, 2026
Our scenario range runs from £24.48 (bear case) to £58.12 (bull case); at £71.35, the current price sits above that range. Bear and bull are the same models run on conservative and optimistic assumptions (margins, growth, valuation multiples), so a plausible valuation range, not a price target. For context, the median of 10 Industrials peers we cover trades at -46% fair-value upside, at -44%, SPX screens cheaper than that median.
Fair Value models
Each model estimates fair value its own way; the Fair Value above is the evidence-weighted blend. Evidence (0–100) measures how completely this model’s inputs are available: well-fed models carry more weight in the blend. The spread across models is intentional, each one stresses a different value driver; dividend models, for instance, come out structurally low when payout is small.
All 26 models by family
Widest divergence: DCF Models (£44.63) versus Asset-Based (£11.10). Highest evidence: Growth DCF (80).
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Key figures & financial health
More key figures
Figures from reported company fundamentals · as of Aug 13, 2026. TTM = trailing twelve months.
Quality Score breakdown
Of which business quality 63 · Market factors (momentum, volatility) 48
Non-valuation factor families (profitability, growth, cashflow, financial strength, momentum …), each academically grounded. Valuation itself sits in the Fair Value and is deliberately excluded here to avoid double-counting.
About the company
Spirax Group plc provides thermal energy and fluid technology solutions in Europe, the Middle East, Africa, the Asia Pacific, and the Americas. It operates through three segments: Steam Thermal Solutions, Electric Thermal Solutions, and Watson-Marlow Fluid Technology Solutions.
Full company description
Spirax Group plc provides thermal energy and fluid technology solutions in Europe, the Middle East, Africa, the Asia Pacific, and the Americas. It operates through three segments: Steam Thermal Solutions, Electric Thermal Solutions, and Watson-Marlow Fluid Technology Solutions. The company offers industrial and commercial steam systems, including condensate management, controls, and thermal energy management products and solutions for heating, curing, cooking, drying, cleaning, sterilizing, space heating, humidifying, vacuum packing, and producing hot water; electrical process heating and temperature management solutions, such as industrial heaters and systems, heat tracing, and various component technologies; and designs and manufactures peristaltic and niche pumps and associated fluid path technologies, including tubing, specialised filling systems and products for single use applications. The company serves food and beverage, pharmaceutical and biotechnology, oil and gas, chemical, power generation, healthcare, buildings, water and wastewater, semiconductor, transport, original equipment manufacturers machinery, and mining and precious metal processing industries. The company was formerly known as Spirax-Sarco Engineering plc and changed its name to Spirax Group PLC in June 2024. Spirax Group PLC was founded in 1888 and is headquartered in Cheltenham, the United Kingdom.
Company description, as reported by the company or data provider.
Revenue & earnings trend
FY2021 – FY2025 · reported fiscal years
Spirax Group reported revenue of £1.7B in FY2025 versus £1.3B in FY2021, a compound +6.1%/yr. Reported net income was £163M in FY2025, compounding −8.6%/yr from FY2021.
of which total revenue +10.2 pp · buybacks/dilution +0.0 pp
Absolute contributions in percentage points per year; they sum to the EPS growth rate. Start and end points are 3-year averages (details on hover).
SPX screens 44% overvalued. Compare with GE Vernova Inc →
Peer Group
Specialty Industrial Machinery · 807 stocks
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.
Valuation Multiples vs Specialty Industrial Machinery median · lower = cheaper
Snowflake
Five quick dimensions, each 0 to 100: VALUE (fair-value potential), FUTURE (revenue growth), PAST (return on equity), HEALTH (low debt), DIVIDEND (yield). Green = this stock, grey = typical sector peer.
VALUE 0: the price sits above our fair-value range.
Insider activity: 45/100
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
ESG scores are not available for this stock yet. Values and ESG data are contextual and can differ between providers.
Similar stocks
10 more Specialty Industrial Machinery stocks, each showing price versus our Fair Value estimate (as of Aug 13, 2026).
| Stock | Price | Fair Value | vs Fair Value |
|---|---|---|---|
| GE Vernova Inc 1GEV | €899.80 | €186.93 | -79% |
| 1SIE 1SIE | €281.75 | €91.93 | -67% |
| SMNS SMNS | C$31.76 | C$22.75 | -28% |
| Atlas Copco AB ATCOA | kr 210.00 | kr 112.59 | -46% |
| Sandvik AB SAND | kr 358.60 | kr 193.01 | -46% |
| Zhejiang Sanhua Intelligent Controls Co 002050 | ¥39.17 | ¥22.68 | -42% |
| NARI Technology Co 600406 | ¥24.06 | ¥18.71 | -22% |
| ABB India Limited ABB | ₹7,700 | ₹1,322 | -83% |
| Cummins India Limited CUMMINSIND | ₹5,315 | ₹1,355 | -75% |
| Bharat Heavy Electricals Limited BHEL | ₹420.00 | ₹96.51 | -77% |
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How we calculate Fair Value
Each company is valued through a stack of independent intrinsic-value models (DCF variants, residual-income, multiples and more), blended into one family-balanced consensus and weighted by how much trustworthy data backs it. A separate quality layer scores the fundamentals. Every input is real reported data, nothing guessed.
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