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Prosper Engineering Public Company Limited (PROS) fair value: what the stock is really worth

As of Nov 6, 2026: fair value (intrinsic value) of Prosper Engineering Public Company Limited stock THB 0.10, price THB 0.15, that is 33.3% below the price, quality 28 out of 100. Rating: overvalued. Calculated from audited financials with one of our 26 valuation models and 37 quality factors, updated daily.

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Industrials TH

PE Prosper Engineering Public Company Limited logo Thin data Nov 7, 2026

Prosper Engineering Public Company Limited

PROS · BK
Expensive, weak quality

Our calculation puts a fair price 33% below what the stock costs today.

Low debt
Revenue last quarter 54% below a year ago.
Fair value 0.1000 THB · Overvalued
Quality 28/100
Weak Growth (revenue 5y −2.5 %/yr in THB)
Loss-making · -42.1% net margin (TTM)
Negative free cash flow
Trails peers (3/10)
Narrow moat 5/100
Thin data
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What runs behind every stock

26 valuation models 8 families, DCF to NCAV 37 quality factors margins, balance sheet, cashflow, debt 6 AI factors moat, what no ratio measures 2,000+ data points verified, per stock, median

69 individual criteria per stock, every one traceable See the method →

Price vs Fair Value

3.38 THB 0.1500 THB Fair Value 0.1000 THB May 2021 Nov 2026

White line = price, green steps = our fair value per fiscal year. As of Nov 7, 2026.

How to read this chart

60‑month range 0.1500 THB – 3.38 THB · fair‑value band 0.0800 THB – 0.1600 THB · the 0.1500 THB price screens above the 0.1000 THB 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 7, 2026.

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Company profile

Prosper Engineering Public Company Limited, together with its subsidiaries, provides engineering systems, design, contracting, engineering consulting, and system maintenance services in Thailand. It operates through M&E Engineering; and Civil & Structure Engineering segments.

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The company installs electrical, communication, air conditioning, water supply, and fire protection systems.

It also operates and installs engineering systems in various types of buildings, including shopping centers, superstores, product distribution centers, mobile telephone network centers, information centers, residential and office buildings, government and public sector buildings, hospitals, and industrial factories.

The company's engineering systems portfolio includes high and low voltage, emergency power supply, telephone, computer network and cabling, fire alarm, public address, audio visual, closed-circuit television, master antenna television, access control, burglar alarm, and building automation systems; air conditioning, chilled water cooled, split type air conditioner, VRF air conditioning, precision air conditioning, chiller plant management, and ventilation systems; and plumbing and fire protection systems, such as water supply, waste treatment, drainage, fire protection, clean agent, LPG, and compressed air systems.

In addition, it undertakes civil and structural, architectural and interior, and renovation works; and provides maintenance services. Prosper Engineering Public Company Limited was incorporated in 1996 and is headquartered in Bangkok, Thailand.

Stock analysis

Prosper Engineering Public Company Limited (PROS) currently trades at 0.1500 THB, while our model-based Fair Value estimate is 0.1000 THB, 33% below the price, so the stock looks overvalued today.

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Valuation

How firm this estimate is: it rests on 1 models at a data quality of 95/100, which puts the data coverage at low.

Scenario range: 0.0800 THB (bear) to 0.1600 THB (bull), the price of 0.1500 THB sits inside 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 28/100 (below-average quality), in the Industrials sector.

Weak Growth: Revenue is shrinking: the last year, the last three and the last five years are all negative.

Prosper Engineering Public Company Limited reported revenue of 830M THB in FY2025 versus 1.0B THB in FY2021, a compound −5.3%/yr. Reported net income was −153M THB in FY2025.

Key figures

Market cap 96.0M THB (≈ $2.9M) Micro · P/S ratio 0.19 · EPS (TTM) −0.3800 THB · Net margin −42.1% · Return on equity −154% · Return on assets (EBIT) −9.2% (5-year average) · Operating margin −50.1% · Revenue (TTM) 504M THB.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 5 out of 100 (medium confidence).

What moves the price

The share trades about 71% below its 52-week high and at 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 −33%, PROS screens cheaper than that median.

Fair Value models

Bear 0.0800 THB Fair Value 0.1000 THB Bull 0.1600 THB
Price 0.1500 THB · Downside -33.3%
Model ⓘEach model values the company its own way (discounted cash flow, earnings, assets, dividends). The fair value above starts from their evidence-weighted blend, not from a single model. In cyclical trough or peak years, after dilution or a stock split it is adjusted afterwards, so it can sit above or below the models. 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. Coverage ⓘCoverage = 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.
Best data coverage
NCAV (Graham) 0.0800 THB 0.1000 THB 0.1600 THB 53
All 1 models by family
Asset-Based
NCAV (Graham) 0.0800 THB 0.1000 THB 0.1600 THB 53

Open the full fair value analysis →

Quality Score breakdown

Overall quality 28/100

It rates the business: profits, how they develop, real cash, balance sheet, investing and share count.

Profitability 18
How much profit the company makes from its sales and capital
Quality Growth 0
Are margins and returns getting better?
Cashflow 9
Do the profits arrive as real cash?
Financial strength 3
Debt, balance sheet and risk of trouble
Investment 100
Does it invest with discipline instead of growing at any price?
Low Volatility 50
How calm the share price moves, does not count
Price momentum 10
Price momentum of the last 3 to 12 months, does not count
Near the 52-week high 0
Distance to the 52-week high, does not count
New shares 81
Buys back shares or issues new ones?

Open the full quality analysis →

Revenue & earnings trend

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. 0/100
Revenue is shrinking: the last year, the last three and the last five years are all negative.
Revenue growth 1 year
−44.5%
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.
−15.0%
Revenue growth 5 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.
−2.5%
Start year 2020 (pandemic)
Revenue growth 9 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.
−1.0%
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.
7.1% (2020) → −15.2% (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
not computed

PROS screens overvalued: fair value 33% below the price. Compare with Quanta Services, Inc →

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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.Engineering & Construction · 791 stocks

Beats the industry median on 3/9 measures
Overall it trails its industry peers.
Valuation
Quality Score 28 · Bottom 25%
Fair Value upside −33.3% · Below median
Profitability
Return on assets −22.1% · Bottom 25%
Net margin (12 months) −42.1% · Bottom 25%
Operating margin (12 months) −50.1% · Bottom 25%
Growth and dividend
Revenue growth (quarter YoY) −53.9% · Bottom 25%
Balance sheet
Debt / equity 0.08× · Below median

Valuation Multiplesvs Engineering & Construction median · lower = cheaper

P/B 1.02× · Cheaper than median
P/S (12 months) 0.19× · Cheapest 25%

Strength profile in five axes (Snowflake)

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE (fair-value potential)0 · sector 34
FUTURE (revenue growth)0 · sector 20
PAST (return on equity)0 · sector 28
HEALTH (low debt)96 · sector 94
DIVIDEND (yield)0 · sector 44

VALUE 0: the price sits above our fair-value range.

Context: sector, industry, market

Values & ESG

Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.

None of the checked exposures detected

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 PROS
Comfort Systems USA, Inc FIX $1,018 $1,119 +10% vs PROS
EMCOR Group EME $608.45 $524.14 −14% vs PROS
ACS, Actividades de Construcción y Servicios, S.A ACS €87.00 €62.21 −28% vs PROS
Samsung C&T Corporation 028260 273,500 KRW 159,702 KRW −42% vs PROS
Larsen & Toubro Limited LT ₹4,118 ₹2,302 −44% vs PROS
HOCHTIEF Aktiengesellschaft HOT €365.60 €203.86 −44% vs PROS
APi Group APG $40.87 $19.20 −53% vs PROS
Ferrovial N.V FER $58.71 $23.06 −61% vs PROS
Quanta Services, Inc PWR $540.90 $162.41 −70% vs PROS

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Prosper Engineering Public Company Limited: fair value per Fair Value Calculator

Cite: Fair Value Calculator (2026). "Prosper Engineering Public Company Limited Fair Value". https://www.fairvalue-calculator.com/stock/PROS

Frequently asked questions

Is Prosper Engineering Public Company Limited (PROS) overvalued or undervalued?
As of Nov 7, 2026, our model estimates a fair value of 0.1000 THB versus a price of 0.1500 THB, about 33% lower (overvalued).
What is the fair value of PROS?
Our model-based fair value for Prosper Engineering Public Company Limited is 0.1000 THB (as of Nov 7, 2026), built from audited fundamentals. The current price: 0.1500 THB.
What is the quality score of PROS?
Prosper Engineering Public Company Limited has a Quality Score of 28/100. 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 Prosper Engineering Public Company Limited (PROS)?
Our model-based price target is the fair value of 0.1000 THB (as of Nov 7, 2026) from 1 valuation models. Cautious scenario 0.0800 THB, optimistic scenario 0.1600 THB. It is a calculation from audited fundamentals, not an analyst target.
What is the Prosper Engineering Public Company Limited stock forecast for 2026?
Our models put fair value at 0.1000 THB, about 33% lower versus a price of 0.1500 THB (overvalued). Cautious scenario 0.0800 THB, optimistic scenario 0.1600 THB. The calculation is refreshed regularly with new filings.
What is the revenue of Prosper Engineering Public Company Limited (PROS)?
Prosper Engineering Public Company Limited reported trailing-twelve-month revenue of about 504M THB (latest available figure, as of Nov 7, 2026).
What is the intrinsic value of Prosper Engineering Public Company Limited (PROS)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Prosper Engineering Public Company Limited it is 0.1000 THB per share (as of Nov 7, 2026), against a price of 0.1500 THB. It is the blended result of 1 valuation models in 1 family (Asset-Based).
Is Prosper Engineering Public Company Limited stock overvalued or undervalued in 2026?
As of Nov 7, 2026, PROS trades above its calculated fair value: price 0.1500 THB, fair value 0.1000 THB, a gap of about −33% (overvalued). 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 PROS?
No. The price is what the market pays today (0.1500 THB); the fair value is what the company's own numbers justify (0.1000 THB). For Prosper Engineering Public Company Limited the two are 0.0500 THB per share apart. That gap is exactly why we show both numbers side by side.
How much is Prosper Engineering Public Company Limited worth?
The market values Prosper Engineering Public Company Limited at about 96.0M THB (market capitalisation, as of Nov 7, 2026). Per share that is 0.1500 THB; our models calculate a fair value of 0.1000 THB per share.
What do the bullish and bearish scenarios say about PROS?
Our models span a range for Prosper Engineering Public Company Limited: cautious scenario 0.0800 THB, base 0.1000 THB, optimistic 0.1600 THB per share (as of Nov 7, 2026, price 0.1500 THB). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of Prosper Engineering Public Company Limited (PROS)?
Balance-sheet figures for Prosper Engineering Public Company Limited (as of Nov 7, 2026): return on equity −154.3%, debt of 0.08 per unit of equity. They feed the Quality Score of 28/100, which measures business quality independently of the share price.
How far is PROS from its 52-week high?
Prosper Engineering Public Company Limited trades at 0.1500 THB, about 71% below its 52-week high of 0.5100 THB and at the low of 0.1500 THB (as of Nov 6, 2026). Distance from the high says nothing about value: that is what the fair value of 0.1000 THB is for.
Which stocks are comparable to Prosper Engineering Public Company Limited?
From the same area (Industrials) we also value Quanta Services, Inc, Vinci SA, Larsen & Toubro Limited, Comfort Systems USA, 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 Prosper Engineering Public Company Limited stock attractive at the current price?
The data as of Nov 7, 2026: price 0.1500 THB, calculated fair value 0.1000 THB (−33%), Quality Score 28/100, from 1 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 PROS calculated?
We run Prosper Engineering Public Company Limited through 1 models from 1 family: Asset-Based. Every model gets the same audited fundamentals; the fair value of 0.1000 THB builds on their evidence-weighted average, 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 13.3% above its aggregate fair value. Prosper Engineering Public Company Limited itself currently trades above fair value. 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 Prosper Engineering Public Company Limited (PROS)?
The closing price on Nov 6, 2026 was 0.1500 THB. Our model-based fair value is 0.1000 THB, about 33% lower (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Prosper Engineering Public Company Limited right now?
Weak quality (28/100) and above fair value at the same time, the margin of safety is missing on both counts. The large gap to fair value rests on thin data (low evidence): fewer applicable models and a shorter history. Read it with extra caution. A fairly wide model range (0.0800 THB to 0.1600 THB) leaves room in how you read the outcome.

Key figures of Prosper Engineering Public Company Limited

How large is the market capitalisation of Prosper Engineering Public Company Limited (PROS)?
The market capitalisation of Prosper Engineering Public Company Limited is 96.0M THB (≈ $2.9M). 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 Prosper Engineering Public Company Limited (PROS)?
The price-to-sales ratio of Prosper Engineering Public Company Limited is 0.19 (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 Prosper Engineering Public Company Limited (PROS)?
Earnings per share at Prosper Engineering Public Company Limited are −0.3800 THB. Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of Prosper Engineering Public Company Limited (PROS)?
The net margin of Prosper Engineering Public Company Limited is −42.1% (last twelve months). 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 Prosper Engineering Public Company Limited (PROS)?
The return on equity (ROE) of Prosper Engineering Public Company Limited is −154% (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 Prosper Engineering Public Company Limited (PROS)?
On an EBIT basis the return on assets of Prosper Engineering Public Company Limited is −9.2% (avg 5y). 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 Prosper Engineering Public Company Limited (PROS)?
The operating margin of Prosper Engineering Public Company Limited is −50.1% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Prosper Engineering Public Company Limited (PROS)?
Revenue at Prosper Engineering Public Company Limited is growing −53.9% versus a year earlier (3y avg −15.0%). How much revenue grew versus a year earlier (YoY). The 3-year average next to it puts the single year in context.
How fast are earnings growing at Prosper Engineering Public Company Limited (PROS)?
Earnings per share at Prosper Engineering Public Company Limited are growing −65.5% versus a year earlier. How much earnings per share grew versus a year earlier.
How much free cash flow does Prosper Engineering Public Company Limited (PROS) generate?
The free cash flow of Prosper Engineering Public Company Limited is −6.5M THB (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 Prosper Engineering Public Company Limited (PROS) carry?
The net debt of Prosper Engineering Public Company Limited is 179M THB (fiscal year 2025). 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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