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Sunflex Tech Co Ltd (3390) fair value: what the stock is really worth

As of Sep 24, 2026: fair value of Sunflex Tech Co Ltd TWD 6.03, price TWD 21.85, upside -72.4%, quality 31 out of 100. Calculated from audited financials with 26 valuation models and 37 quality factors, updated daily.

  1. Fair value above price? No
  2. Good quality? No
  3. Add to watchlist

Technology · TW · ISIN TW0003390001

ST Thin data Sep 24, 2026

Sunflex Tech Co Ltd

3390 · TWO

Weakest SetupStrongly overvalued and low quality.

!Fair value 6.03 TWD · Strongly overvalued (−72%)
!Quality 31/100
!Weak Growth (revenue 5y +3.8 %/yr)
!Loss-making · -2.3% net margin (TTM)
!Low debt · negative free cash flow
·0.92% dividend yield
!Trails peers (2/10)
!Narrow moat 13/100
!Evidence only low, so the estimate is less certain
!Weak on dividend: 18 out of 100
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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

38.50 TWD 12.67 TWD Fair Value 6.03 TWD May 2021 Sep 2026

White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Sep 24, 2026.

How to read this chart

60‑month range 12.67 TWD – 38.50 TWD · fair‑value band 5.65 TWD – 6.57 TWD · the 21.85 TWD price screens above the 6.03 TWD fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Sep 24, 2026.

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Company profile

Sunflex Tech Co., Ltd. engages in the manufacture and sale of electronic components in Taiwan, rest of Asia, the Americas, and Europe. It offers flexible printed circuit boards (FPCB). The company is also involved in the general investment activities.

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Sunflex Tech Co., Ltd. engages in the manufacture and sale of electronic components in Taiwan, rest of Asia, the Americas, and Europe. It offers flexible printed circuit boards (FPCB). The company is also involved in the general investment activities. Its products are used in consumer electronics, automotive, industrial control, medical, and other industries applications. Sunflex Tech Co., Ltd. was incorporated in 1998 and is headquartered in Taoyuan City, Taiwan.

Stock analysis

Sunflex Tech Co Ltd (3390) currently trades at 21.85 TWD, while our model-based Fair Value estimate is 6.03 TWD, implying the stock looks roughly 262.6% overvalued today.

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Valuation

Bull case: the Asset-Based group reads highest at a median of 11.82 TWD per share, and 0 of the 3 models we run sit above the 21.85 TWD price.

Bear case: the Dividend Discount group reads lowest at 7.41 TWD, and 3 of the 3 models stay below the price. Evidence for this calculation is low.

Scenario range: 5.65 TWD (bear) to 6.57 TWD (bull), the price of 21.85 TWD 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 31/100 (below-average quality), in the Technology sector.

Weak Growth: Revenue growth is inconsistent: the periods point in different directions, so there is no trend to rely on.

Sunflex Tech Co Ltd reported revenue of 792M TWD in FY2025 versus 899M TWD in FY2021, a compound −3.1%/yr. Reported net income was −42.2M TWD in FY2025.

Key figures

Market cap 1.7B TWD (≈ $54.3M) · P/S ratio 1.98 · EPS (TTM) −0.2800 TWD · Dividend yield 0.9% · Net margin −5.3% · Return on equity −1.5% · Return on assets (EBIT) 0.4% · Operating margin −2.9%.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 32 out of 100 (low confidence).

What moves the price

The share trades about 27% below its 52-week high and 15% above its 52-week low, currently below its 200-day average.

For context, the median of 10 Technology peers we cover trades at −66% fair-value upside, at −72%, 3390 screens richer than that median.

Fair Value models

Bear 5.65 TWD Fair Value 6.03 TWD Bull 6.57 TWD
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. 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.
Highest evidence
Gordon GGM 6.93 TWD 7.41 TWD 8.11 TWD 67
DDM Multi-Stage 6.93 TWD 8.02 TWD 9.39 TWD 65
NCAV (Graham) 8.82 TWD 11.82 TWD 17.64 TWD 54
All 3 models by family
Dividend Discount
Gordon GGM 6.93 TWD 7.41 TWD 8.11 TWD 67
DDM Multi-Stage 6.93 TWD 8.02 TWD 9.39 TWD 65
Asset-Based
NCAV (Graham) 8.82 TWD 11.82 TWD 17.64 TWD 54

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Quality Score breakdown

Overall quality 31/100

Of which business quality 36 · Market factors (momentum, volatility) 41

Profitability 11
Margins and returns on capital today
Quality Growth 20
Are margins and returns improving?
Cashflow 15
Earnings quality: real cash, not paper profit
Fin. Strength 94
Balance sheet, leverage, solvency risk
Investment 54
Disciplined investing over empire-building
Low Volatility 52
Calm price path (market factor)
Momentum 37
Price trend over the last 3–12 months (market factor)
52W Momentum 37
Distance to the 52-week high (market factor)
Net Issuance 21
Share count: buybacks or dilution?

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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. 8/100
Revenue growth is inconsistent: the periods point in different directions, so there is no trend to rely on.
Revenue growth 1 year
−7.4%
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.
−7.3%
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.
+3.8%
Start year 2020 (pandemic)
Revenue growth 8 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.
−2.9%
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.
−17.3% (2020) → −4.1% (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

3390 screens 263% overvalued. Compare with Amphenol Corporation →

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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.Electronic Components · 654 stocks

Beats the industry median on 2/9 measures
Overall it trails its industry peers.
Valuation
Quality Score 31 · Bottom 25%
Fair Value upside −72% · Bottom 25%
Profitability
Return on assets −1% · Bottom 25%
Net margin (TTM) −2% · Bottom 25%
Operating margin (TTM) −3% · Bottom 25%
Growth and dividend
Revenue growth 51% · Top 25%
Dividend yield (TTM) 0.9% · Below median
Balance sheet
Debt / equity 0.14× · Above median

Valuation Multiplesvs Electronic Components median · lower = cheaper

P/S (TTM) 0.06× · Cheapest 25%

Strength profile in five axes (Snowflake)

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE (fair-value potential)0 · sector 0
FUTURE (revenue growth)100 · sector 38
PAST (return on equity)0 · sector 26
HEALTH (low debt)93 · sector 95
DIVIDEND (yield)18 · sector 25

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 Electronic Components stocks, each showing price versus our Fair Value estimate.

Stock Price Fair Value vs Fair Value
Amphenol Corporation APH $83.08 $84.44 +2%
Delta Electronics, Inc 2308 1,910 TWD 519.57 TWD −73%
Corning Incorporated GLW $154.15 $33.52 −78%
Hon Hai Precision Industry Co 2317 250.50 TWD 293.80 TWD +17%
Samsung Electro-Mechanics Co 009150 1,507,000 KRW 171,572 KRW −89%
Luxshare Precision Industry Co 002475 ¥54.84 ¥18.55 −66%
Suzhou Dongshan Precision Manufacturing Co 002384 ¥198.12 ¥21.19 −89%
TE Connectivity plc TEL $213.48 $140.75 −34%
Elite Material Co 2383 5,050 TWD 800.51 TWD −84%
Yageo Corporation 2327 580.00 TWD 527.64 TWD −9%

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Sunflex Tech Co Ltd · Fair Value
6.03 TWD −263%Fair Value
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Cite: Fair Value Calculator (2026). "Sunflex Tech Co Ltd Fair Value". https://www.fairvalue-calculator.com/stock/3390

Frequently asked questions

Is Sunflex Tech Co Ltd (3390) overvalued or undervalued?
As of Sep 24, 2026, our model estimates a fair value of 6.03 TWD versus a price of 21.85 TWD, about −72% upside (overvalued).
What is the fair value of 3390?
Our model-based fair value for Sunflex Tech Co Ltd is 6.03 TWD (as of Sep 24, 2026), built from audited fundamentals. The current price: 21.85 TWD.
What is the quality score of 3390?
Sunflex Tech Co Ltd has a Quality Score of 31/100. 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 Sunflex Tech Co Ltd (3390)?
Our model-based price target is the fair value of 6.03 TWD (as of Sep 24, 2026) from 3 valuation models. Cautious scenario 5.65 TWD, optimistic scenario 6.57 TWD. It is a calculation from audited fundamentals, not an analyst target.
What is the Sunflex Tech Co Ltd stock forecast for 2026?
Our models put fair value at 6.03 TWD, about −72% upside versus a price of 21.85 TWD (overvalued). Cautious scenario 5.65 TWD, optimistic scenario 6.57 TWD. The calculation is refreshed regularly with new filings.
What is the revenue of Sunflex Tech Co Ltd (3390)?
Sunflex Tech Co Ltd reported trailing-twelve-month revenue of about 901M TWD (latest available figure, as of Sep 24, 2026).
Does Sunflex Tech Co Ltd pay a dividend?
Sunflex Tech Co Ltd currently shows a dividend yield of about 0.92% relative to its recent price (as of Sep 24, 2026).
What is the intrinsic value of Sunflex Tech Co Ltd (3390)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Sunflex Tech Co Ltd it is 6.03 TWD per share (as of Sep 24, 2026), against a price of 21.85 TWD. It is the blended result of 3 valuation models (cash flow, earnings, asset, dividend).
Is Sunflex Tech Co Ltd stock overvalued or undervalued in 2026?
As of Sep 24, 2026, 3390 trades above its calculated fair value: price 21.85 TWD, fair value 6.03 TWD, a gap of about −72% (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 3390?
No. The price is what the market pays today (21.85 TWD); the fair value is what the company's own numbers justify (6.03 TWD). For Sunflex Tech Co Ltd the two are 15.82 TWD per share apart. That gap is exactly why we show both numbers side by side.
How much is Sunflex Tech Co Ltd worth?
The market values Sunflex Tech Co Ltd at about 1.7B TWD (market capitalisation, as of Sep 24, 2026). Per share that is 21.85 TWD; our models calculate a fair value of 6.03 TWD per share.
What do the bullish and bearish scenarios say about 3390?
Our models span a range for Sunflex Tech Co Ltd: cautious scenario 5.65 TWD, base 6.03 TWD, optimistic 6.57 TWD per share (as of Sep 24, 2026, price 21.85 TWD). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of Sunflex Tech Co Ltd (3390)?
Balance-sheet figures for Sunflex Tech Co Ltd (as of Sep 24, 2026): return on equity −1.5%, debt of 0.14 per unit of equity. They feed the Quality Score of 31/100, which measures business quality independently of the share price.
How far is 3390 from its 52-week high?
Sunflex Tech Co Ltd trades at 21.85 TWD, about 27% below its 52-week high of 29.95 TWD and 15% above the low of 19.05 TWD (as of Sep 24, 2026). Distance from the high says nothing about value: that is what the fair value of 6.03 TWD is for.
Which stocks are comparable to Sunflex Tech Co Ltd?
From the same area (Technology) we also value Amphenol Corporation, Delta Electronics, Inc, Corning Incorporated, Hon Hai Precision Industry Co, 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 Sunflex Tech Co Ltd stock attractive at the current price?
The data as of Sep 24, 2026: price 21.85 TWD, calculated fair value 6.03 TWD (−72%), Quality Score 31/100, from 3 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 3390 calculated?
We run Sunflex Tech Co Ltd through 3 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 6.03 TWD, 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 14.0 % above its aggregate fair value. Sunflex Tech Co Ltd 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 Sunflex Tech Co Ltd (3390)?
The closing price on Sep 24, 2026 was 21.85 TWD. Our model-based fair value is 6.03 TWD, about −72% upside (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Sunflex Tech Co Ltd right now?
The price sits above even our optimistic bull case (6.57 TWD). The favourable scenario is already priced in. Weak quality (31/100) 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.

Key figures of Sunflex Tech Co Ltd

How large is the market capitalisation of Sunflex Tech Co Ltd (3390)?
The market capitalisation of Sunflex Tech Co Ltd is 1.7B TWD (≈ $54.3M). 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 Sunflex Tech Co Ltd (3390)?
The price-to-sales ratio of Sunflex Tech Co Ltd is 1.98 (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 Sunflex Tech Co Ltd (3390)?
Earnings per share at Sunflex Tech Co Ltd are −0.2800 TWD. Earnings per share over the last twelve months: total profit spread across every single share.
What is the dividend yield of Sunflex Tech Co Ltd (3390)?
The dividend yield of Sunflex Tech Co Ltd is 0.9%. Yearly dividend relative to the share price. 3% pays 3 per 100 invested. Below: how much of profit is used for it.
What is the net margin of Sunflex Tech Co Ltd (3390)?
The net margin of Sunflex Tech Co Ltd is −5.3% (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 Sunflex Tech Co Ltd (3390)?
The return on equity (ROE) of Sunflex Tech Co Ltd is −1.5% (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 Sunflex Tech Co Ltd (3390)?
On an EBIT basis the return on assets of Sunflex Tech Co Ltd is 0.4% (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 Sunflex Tech Co Ltd (3390)?
The operating margin of Sunflex Tech Co Ltd is −2.9% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Sunflex Tech Co Ltd (3390)?
Revenue at Sunflex Tech Co Ltd is growing +50.9% versus a year earlier (3y avg −7.3%). 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 Sunflex Tech Co Ltd (3390)?
Earnings per share at Sunflex Tech Co Ltd are growing −32.6% versus a year earlier. How much earnings per share grew versus a year earlier.
How much free cash flow does Sunflex Tech Co Ltd (3390) generate?
The free cash flow of Sunflex Tech Co Ltd is −472M TWD (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 Sunflex Tech Co Ltd (3390) carry?
The net debt of Sunflex Tech Co Ltd is 312M TWD (fiscal year 2022). 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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