SIG plc (SIIGF) fair value: what the stock is really worth
As of Sep 25, 2026: fair value of SIG plc $0.41, price $0.16, upside +156.3%, quality 52 out of 100. Calculated from audited financials with 26 valuation models and 37 quality factors, updated daily.
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SIG plc supplies specialist insulation and sustainable construction products and solutions in the United Kingdom, Ireland, France, Germany, Poland, and Benelux.
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SIG plc supplies specialist insulation and sustainable construction products and solutions in the United Kingdom, Ireland, France, Germany, Poland, and Benelux. The company offers insulation and interiors products, including structural and technical insulations, construction accessories and fixings, cladding and façade systems, dry lining, ceiling tiles and grids, partition walls and door sets, and floor coverings, as well as tools and fixings, ventilation, access equipment, and safety products. It provides roofing and exterior products, such as tiles, slates, membranes, battens for pitched roofs, single-ply flat roof systems, industrial roofing products, cladding systems, room-in-roof panel systems, and photovoltaic panels, as well as industrial painting, coating, and repair services. It serves developers, specialist contractors, specialist installers, and independent merchants. The company was formerly known as Sheffield Insulations Limited. SIG plc was founded in 1957 and is based in Sheffield, the United Kingdom.
Stock analysis
SIG plc (SIIGF) currently trades at $0.1600, while our model-based Fair Value estimate is $0.4100, implying the stock looks roughly 61.0% undervalued today.
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Valuation
Bull case: the DCF Models group reads highest at a median of $1.24 per share, and 10 of the 13 models we run sit above the $0.1600 price.
Bear case: the Asset-Based group reads lowest at $0.0900, and 3 of the 13 models stay below the price. Evidence for this calculation is low.
Scenario range: $0.2500 (bear) to $0.5700 (bull), the price of $0.1600 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 52/100 (solid quality), in the Industrials sector.
Weak Growth: Revenue is shrinking: the last year, the last three and the last five years are all negative.
SIG plc reported revenue of £2.6B in FY2025 versus £2.7B in FY2022, a compound −1.9%/yr. Reported net income was −£64.1M in FY2025.
Key figures
Market cap $185M · P/S ratio 0.07 · EPS (TTM) $−0.0600 · Net margin −2.5% · Return on equity −42.7% · Return on assets (EBIT) 2.3% · Operating margin 0.9% · Revenue (TTM) £2.6B.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 28 out of 100 (low confidence).
What moves the price
For context, the median of 10 Industrials peers we cover trades at −30% fair-value upside, at 156%, SIIGF screens cheaper than that median.
Fair Value models
Bear $0.2500Fair Value $0.4100Bull $0.5700
Model ⓘEach model values the company its own way (discounted cash flow, earnings, assets, dividends). The fair value above is their evidence-weighted blend, not the output of a single model.Bear ⓘBear = the cautious scenario: the same model computed with conservative anchors (lower growth, margins and valuation multiples). Together with Bull it frames a plausible valuation range, not a price target.BaseBull ⓘBull = the optimistic scenario: the same model computed with favourable anchors (higher growth, margins and valuation multiples). Together with Bear it frames a plausible valuation range, not a price target. If a model's bull case is above four times its base value, the table shows that limit with a > sign (like the overall Bull above): beyond it no assumption holds.Evidence ⓘEvidence = how well-backed THIS model's estimate is for this stock (0–100): how complete and reliable its input data are, and how well the model fits the company. The final Fair Value is an evidence-weighted blend, so better-evidenced models count more. Green ≥70, amber 50–69, grey below 50.
Growth Quality ⓘGrowth is valuable only when reinvestment earns attractive returns (Aswath Damodaran): sustainable growth depends on return on capital, reinvestment and efficiency. Basis: total company revenue over the periods shown on the cards (3Y/5Y/all years), not per share, so a merger can show up as a growth jump; per-share earnings growth is in the value-creation card.18/100
Revenue is shrinking: the last year, the last three and the last five years are all negative.
Revenue growth 1 year
−0.8%
Revenue growth 3 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
−1.9%
’22
’23
’24
’25
Profit margin (trend) ⓘOperating margin then vs now, from reported annual statements. A falling margin after a boom year is the classic peak-earnings signal: the growth rate then leans on an inflated base.
2.7% (2022) → 1.3% (2025)
What shareholders gained per year ⓘWe only publish this rate when it is defensible. Reason: fiscal 2025 is a loss year, no rate is defined from a loss
Price, fair value, quality and upside side by side.
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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.Industrial Distribution · 109 stocks
Beats the industry median on 4/11 measures
Overall it trails its industry peers.
Valuation
Quality Score52 · Below median
Fair Value upside+156.3% · Top 25%
Profitability
Return on assets1.3% · Bottom 25%
Net margin (TTM)−2.5% · Bottom 25%
Operating margin (TTM)0.9% · Bottom 25%
Growth and dividend
Revenue growth−0.6% · Below median
Balance sheet
Debt / equity2.16× · Highest 25%
Valuation Multiplesvs Industrial Distribution median · lower = cheaper
For bloggers, editors and developers: paste this into your site or blog (a “Custom HTML” block in WordPress), it shows the current fair value and links back here. Free, plain HTML, and welcome. Full data streams (CSV/JSON) at /developers.
Cite: Fair Value Calculator (2026). "SIG plc Fair Value". https://www.fairvalue-calculator.com/stock/SIIGF
Frequently asked questions
Is SIG plc (SIIGF) overvalued or undervalued?
As of Sep 24, 2026, our model estimates a fair value of $0.4100 versus a price of $0.1600, about +156% upside (undervalued).
What is the fair value of SIIGF?
Our model-based fair value for SIG plc is $0.4100 (as of Sep 24, 2026), built from audited fundamentals. The current price: $0.1600.
What is the quality score of SIIGF?
SIG plc has a Quality Score of 52/100. It measures business quality (profitability, growth, cash flow, balance-sheet strength, investment discipline, share issuance). Market factors such as price momentum and volatility do not enter the number; they are shown separately in the detail view.
What is the price target for SIG plc (SIIGF)?
Our model-based price target is the fair value of $0.4100 (as of Sep 24, 2026) from 13 valuation models. Cautious scenario $0.2500, optimistic scenario $0.5700. It is a calculation from audited fundamentals, not an analyst target.
What is the SIG plc stock forecast for 2026?
Our models put fair value at $0.4100, about +156% upside versus a price of $0.1600 (undervalued). Cautious scenario $0.2500, optimistic scenario $0.5700. The calculation is refreshed regularly with new filings.
What is the revenue of SIG plc (SIIGF)?
SIG plc reported trailing-twelve-month revenue of about £2.6B (latest available figure, as of Sep 24, 2026).
What is the intrinsic value of SIG plc (SIIGF)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For SIG plc it is $0.4100 per share (as of Sep 24, 2026), against a price of $0.1600. It is the blended result of 13 valuation models (cash flow, earnings, asset, dividend).
Is SIG plc stock overvalued or undervalued in 2026?
As of Sep 24, 2026, SIIGF trades below its calculated fair value: price $0.1600, fair value $0.4100, a gap of about +156% (undervalued). The calculation is refreshed with each new quarterly report, so the verdict can change during the year.
Is fair value the same as the market price of SIIGF?
No. The price is what the market pays today ($0.1600); the fair value is what the company's own numbers justify ($0.4100). For SIG plc the two are $0.2500 per share apart. That gap is exactly why we show both numbers side by side.
How much is SIG plc worth?
The market values SIG plc at about $185M (market capitalisation, as of Sep 24, 2026). Per share that is $0.1600; our models calculate a fair value of $0.4100 per share.
What do the bullish and bearish scenarios say about SIIGF?
Our models span a range for SIG plc: cautious scenario $0.2500, base $0.4100, optimistic $0.5700 per share (as of Sep 24, 2026, price $0.1600). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of SIG plc (SIIGF)?
Balance-sheet figures for SIG plc (as of Sep 24, 2026): return on equity −42.7%, debt of 2.16 per unit of equity. They feed the Quality Score of 52/100, which measures business quality independently of the share price.
Which stocks are comparable to SIG plc?
From the same area (Industrials) we also value W.W. Grainger, Inc, Fastenal Company, Ferguson Enterprises Inc, WESCO International, Inc, among others. Each of them has its own fair-value calculation on this site using the same models, so the comparison is like for like.
Is SIG plc stock attractive at the current price?
The data as of Sep 24, 2026: price $0.1600, calculated fair value $0.4100 (+156%), Quality Score 52/100, from 13 models. Whether that fits your horizon and risk tolerance is your call. We provide the calculation, not investment advice.
How is the fair value of SIIGF calculated?
We run SIG plc through 13 models from four families: discounted cash flow, earnings models, asset and balance-sheet models, and dividend models. Every model gets the same audited fundamentals; the result is the weighted average of $0.4100, with the spread shown as a cautious and an optimistic scenario.
Is it still worth investing in stocks now?
The global stock market currently sits 14.9 % above its aggregate fair value. SIG plc currently trades 61 % below its own fair value, and the market average says nothing about that. An expensive market is no reason to stay out and no reason to buy everything at once: keep a broad savings plan running, buy single stocks only with money you can do without, and hold part of your money liquid while the market is high. The full picture including sectors is on is it worth investing now.
What is the share price of SIG plc (SIIGF)?
The closing price on Sep 25, 2026 was $0.1600. Our model-based fair value is $0.4100, about +156% upside (undervalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with SIG plc right now?
The price is below even our cautious bear case ($0.2500). The market is more pessimistic than our downside scenario. The large gap to fair value rests on thin data (low evidence): fewer applicable models and a shorter history. Read it with extra caution. Solid quality (52/100) at a price below fair value, the discount is the argument here, not the business quality. A fairly wide model range ($0.2500 to $0.5700) leaves room in how you read the outcome.
Key figures of SIG plc
How large is the market capitalisation of SIG plc (SIIGF)?
The market capitalisation of SIG plc is $185M. The stock-market value of the whole company: share price times number of shares. It is what the market asks for the entire business today.
What is the P/S ratio of SIG plc (SIIGF)?
The price-to-sales ratio of SIG plc is 0.07 (last twelve months). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What are the earnings per share of SIG plc (SIIGF)?
Earnings per share at SIG plc are $−0.0600. Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of SIG plc (SIIGF)?
The net margin of SIG plc is −2.5% (fiscal year 2025). How much of every unit of revenue ends up as profit. 10% means 10 cents of profit per dollar of sales.
What is the return on equity of SIG plc (SIIGF)?
The return on equity (ROE) of SIG plc is −42.7% (last twelve months). Profit relative to shareholders' equity, how efficiently the company works with its owners' money.
What is the EBIT return on assets of SIG plc (SIIGF)?
On an EBIT basis the return on assets of SIG plc is 2.3% (avg 4y). Operating profit (EBIT) relative to everything the company owns, as a multi-year average. It describes the business model rather than one good or bad year.
What is the operating margin of SIG plc (SIIGF)?
The operating margin of SIG plc is 0.9% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at SIG plc (SIIGF)?
Revenue at SIG plc is growing −0.6% versus a year earlier (3y avg −1.9%). How much revenue grew versus a year earlier (YoY). The 3-year average next to it puts the single year in context.
How much free cash flow does SIG plc (SIIGF) generate?
The free cash flow of SIG plc is £104M (fiscal year 2025). The cash truly left after running and investing in the business, this is what pays dividends and buybacks.
How much net debt does SIG plc (SIIGF) carry?
The net debt of SIG plc is £195M (fiscal year 2025, ≈ 1.9 yrs of FCF). Debt minus cash on hand. The note shows how many years of free cash flow could in theory pay it off.
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Thin data
Sep 24, 2026