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Goldtek Technology Co., Ltd. (6638) fair value: what the stock is really worth

As of Oct 2, 2026: fair value of Goldtek Technology Co., Ltd. TWD 7.37, price TWD 44.90, upside -83.6%, quality 40 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 TW0006638000

GT Thin data Sep 24, 2026

Goldtek Technology Co., Ltd.

6638 · TWO

Weakest SetupStrongly overvalued and low quality.

!Fair value 7.37 TWD · Strongly overvalued (−83.6%)
!Quality 40/100
!Weak Growth (revenue 5y −13.3 %/yr)
!Loss-making · -19.2% net margin (TTM)
!negative free cash flow
!Trails peers (1/9)
!Narrow moat 16/100
!Evidence only low, so the estimate is less certain
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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

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Price vs Fair Value

66.90 TWD 24.50 TWD Fair Value 7.37 TWD Dec 2025 Oct 2026

White line = price, green steps = our fair value per fiscal year. As of Sep 24, 2026.

How to read this chart

10‑month range 24.50 TWD – 66.90 TWD · fair‑value band 4.86 TWD – 9.21 TWD · the 44.90 TWD price screens above the 7.37 TWD fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Sep 24, 2026.

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Company profile

Goldtek Technology Co., Ltd. engages in the designing and manufacturing of telecommunications regulated radio frequency equipment and industrial communication handheld devices in Taiwan and China.

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Goldtek Technology Co., Ltd. engages in the designing and manufacturing of telecommunications regulated radio frequency equipment and industrial communication handheld devices in Taiwan and China. The company provides smart home solutions, such as cloud and AI enabled DIY spotlight and panorama cameras, smart door locks and bells, home automation devices, smart safe and surveillance tablets, and cloud digital image frames; smart life solutions comprising smart bike locks, pet health trackers, wearable tracking devices, smart health wristbands and breast pumps, smart watch, and smart insoles. It also offers vehicle IoT devices, including auto wi-fi dongles; and smart logistic solutions consists of portable data collectors, luggage trackers, pallet trackers, smart home and logistic cabinets, and mailboxes, as well as EMS, and artificial intelligence and cloud services. The company serves homes and communities; office and enterprises; parking lots and industrial zones; and retail and public spaces. Goldtek Technology Co., Ltd. was founded in 2003 and is based in New Taipei City, Taiwan.

Stock analysis

Goldtek Technology Co., Ltd. (6638) currently trades at 44.90 TWD, while our model-based Fair Value estimate is 7.37 TWD, 83.6% 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 80/100, which puts the evidence level at low.

Scenario range: 4.86 TWD (bear) to 9.21 TWD (bull), the price of 44.90 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 40/100 (below-average quality), in the Technology sector.

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

Goldtek Technology Co., Ltd. reported revenue of 2.0B TWD in FY2025 versus 4.4B TWD in FY2021, a compound −17.6%/yr. Reported net income was −393M TWD in FY2025.

Key figures

Market cap 1.5B TWD (≈ $46.7M) · P/S ratio 0.73 · EPS (TTM) −13.10 TWD · Net margin −19.2% · Return on equity −20.0% · Return on assets (EBIT) 1.3% · Operating margin −8.8% · Revenue (TTM) 2.0B TWD.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 38 out of 100 (medium confidence).

What moves the price

For context, the median of 10 Technology peers we cover trades at −62% fair-value upside, at −84%, 6638 screens richer than that median.

Fair Value models

Bear 4.86 TWD Fair Value 7.37 TWD Bull 9.21 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. 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.
Highest evidence
NCAV (Graham) 20.40 TWD 27.34 TWD 40.80 TWD 51
All 1 models by family
Asset-Based
NCAV (Graham) 20.40 TWD 27.34 TWD 40.80 TWD 51

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Quality Score breakdown

Overall quality 40/100

Of which business quality 39 · Market factors (momentum, volatility) 60

Profitability 12
Margins and returns on capital today
Quality Growth 14
Are margins and returns improving?
Cashflow 0
Earnings quality: real cash, not paper profit
Fin. Strength 62
Balance sheet, leverage, solvency risk
Investment 95
Disciplined investing over empire-building
Low Volatility 50
Calm price path (market factor)
Momentum 60
Price trend over the last 3–12 months (market factor)
52W Momentum 71
Distance to the 52-week high (market factor)
Net Issuance 83
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. 0/100
Revenue is shrinking: the last year, the last three and the last five years are all negative.
Revenue growth 1 year
−26.0%
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.
−20.9%
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.
−13.3%
Start year 2020 (pandemic). Over 10 years: +7.5% a year
Revenue growth 11 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.
+26.9%
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.
10.3% (2020) → −12.6% (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

6638 screens overvalued: fair value 84% below the price. Compare with Cisco Systems, 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.Communication Equipment · 299 stocks

Beats the industry median on 1/8 measures
Overall it trails its industry peers.
Valuation
Quality Score 39 · Bottom 25%
Fair Value upside −83.6% · Bottom 25%
Profitability
Return on assets −6.9% · Bottom 25%
Net margin (TTM) −19.2% · Bottom 25%
Operating margin (TTM) −8.8% · Bottom 25%
Growth and dividend
Revenue growth −24.0% · Bottom 25%
Dividend yield (TTM) 0.0% · Bottom 25%

Valuation Multiplesvs Communication Equipment median · lower = cheaper

P/S (TTM) 0.02× · Cheapest 25%

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 Communication Equipment stocks, each showing price versus our Fair Value estimate.

Stock Price Fair Value vs Fair Value
Cisco Systems, Inc CSCO $107.63 $118.39 +10%
Foxconn Industrial Internet Co 601138 ¥61.00 ¥13.99 −77%
Zhongji Innolight Co 300308 ¥895.86 ¥342.18 −62%
Eoptolink Technology Inc 300502 ¥435.00 ¥289.12 −34%
Motorola Solutions, Inc MSI $445.97 $249.04 −44%
Nokia Oyj NOKIA €9.19 €3.15 −66%
Ciena Corporation CIEN $356.91 $48.70 −86%
Suzhou TFC Optical Communication Co 300394 ¥267.93 ¥87.34 −67%
Ubiquiti Inc UI $609.64 $670.60 +10%
Yangtze Optical Fibre And Cable Joint Stock Limited 6869 HK$186.50 HK$32.66 −82%

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Goldtek Technology Co., Ltd. · Fair Value
7.37 TWD −84%Fair Value
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Cite: Fair Value Calculator (2026). "Goldtek Technology Co., Ltd. Fair Value". https://www.fairvalue-calculator.com/stock/6638

Frequently asked questions

Is Goldtek Technology Co., Ltd. (6638) overvalued or undervalued?
As of Sep 24, 2026, our model estimates a fair value of 7.37 TWD versus a price of 44.90 TWD, about −84% upside (overvalued).
What is the fair value of 6638?
Our model-based fair value for Goldtek Technology Co., Ltd. is 7.37 TWD (as of Sep 24, 2026), built from audited fundamentals. The current price: 44.90 TWD.
What is the quality score of 6638?
Goldtek Technology Co., Ltd. has a Quality Score of 40/100. 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 Goldtek Technology Co., Ltd. (6638)?
Our model-based price target is the fair value of 7.37 TWD (as of Sep 24, 2026) from 1 valuation models. Cautious scenario 4.86 TWD, optimistic scenario 9.21 TWD. It is a calculation from audited fundamentals, not an analyst target.
What is the Goldtek Technology Co., Ltd. stock forecast for 2026?
Our models put fair value at 7.37 TWD, about −84% upside versus a price of 44.90 TWD (overvalued). Cautious scenario 4.86 TWD, optimistic scenario 9.21 TWD. The calculation is refreshed regularly with new filings.
What is the revenue of Goldtek Technology Co., Ltd. (6638)?
Goldtek Technology Co., Ltd. reported trailing-twelve-month revenue of about 2.0B TWD (latest available figure, as of Sep 24, 2026).
What is the intrinsic value of Goldtek Technology Co., Ltd. (6638)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Goldtek Technology Co., Ltd. it is 7.37 TWD per share (as of Sep 24, 2026), against a price of 44.90 TWD. It is the blended result of 1 valuation models (cash flow, earnings, asset, dividend).
Is Goldtek Technology Co., Ltd. stock overvalued or undervalued in 2026?
As of Sep 24, 2026, 6638 trades above its calculated fair value: price 44.90 TWD, fair value 7.37 TWD, a gap of about −84% (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 6638?
No. The price is what the market pays today (44.90 TWD); the fair value is what the company's own numbers justify (7.37 TWD). For Goldtek Technology Co., Ltd. the two are 37.53 TWD per share apart. That gap is exactly why we show both numbers side by side.
How much is Goldtek Technology Co., Ltd. worth?
The market values Goldtek Technology Co., Ltd. at about 1.5B TWD (market capitalisation, as of Sep 24, 2026). Per share that is 44.90 TWD; our models calculate a fair value of 7.37 TWD per share.
What do the bullish and bearish scenarios say about 6638?
Our models span a range for Goldtek Technology Co., Ltd.: cautious scenario 4.86 TWD, base 7.37 TWD, optimistic 9.21 TWD per share (as of Sep 24, 2026, price 44.90 TWD). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of Goldtek Technology Co., Ltd. (6638)?
Balance-sheet figures for Goldtek Technology Co., Ltd. (as of Sep 24, 2026): return on equity −20.0%. They feed the Quality Score of 40/100, which measures business quality independently of the share price.
Which stocks are comparable to Goldtek Technology Co., Ltd.?
From the same area (Technology) we also value Cisco Systems, Inc, Foxconn Industrial Internet Co, Zhongji Innolight Co, Eoptolink Technology 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 Goldtek Technology Co., Ltd. stock attractive at the current price?
The data as of Sep 24, 2026: price 44.90 TWD, calculated fair value 7.37 TWD (−84%), Quality Score 40/100, 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 6638 calculated?
We run Goldtek Technology Co., Ltd. through 1 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 7.37 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 14.5 % above its aggregate fair value. Goldtek Technology 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 Goldtek Technology Co., Ltd. (6638)?
The closing price on Oct 2, 2026 was 44.90 TWD. Our model-based fair value is 7.37 TWD, about −84% upside (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Goldtek Technology Co., Ltd. right now?
The price sits above even our optimistic bull case (9.21 TWD). The favourable scenario is already priced in. Weak quality (40/100) 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 (4.86 TWD to 9.21 TWD) leaves room in how you read the outcome.
Where does the earnings growth of Goldtek Technology Co., Ltd. (6638) come from?
Earnings per share at Goldtek Technology Co., Ltd. grew −2.5 % a year from 2014 to 2024. Broken into its drivers: revenue per share +7.4 %, EBIT margin −8.1 %, tax rate −1.8 %, residual (interest, one-offs) +0.5 %. The four rates multiply to the earnings growth rate, they do not add up. Start and end are three-year averages so a single exceptional year does not distort the result.

Key figures of Goldtek Technology Co., Ltd.

How large is the market capitalisation of Goldtek Technology Co., Ltd. (6638)?
The market capitalisation of Goldtek Technology Co., Ltd. is 1.5B TWD (≈ $46.7M). 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 Goldtek Technology Co., Ltd. (6638)?
The price-to-sales ratio of Goldtek Technology Co., Ltd. is 0.73 (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 Goldtek Technology Co., Ltd. (6638)?
Earnings per share at Goldtek Technology Co., Ltd. are −13.10 TWD. Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of Goldtek Technology Co., Ltd. (6638)?
The net margin of Goldtek Technology Co., Ltd. is −19.2% (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 Goldtek Technology Co., Ltd. (6638)?
The return on equity (ROE) of Goldtek Technology Co., Ltd. is −20.0% (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 Goldtek Technology Co., Ltd. (6638)?
On an EBIT basis the return on assets of Goldtek Technology Co., Ltd. is 1.3% (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 Goldtek Technology Co., Ltd. (6638)?
The operating margin of Goldtek Technology Co., Ltd. is −8.8% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Goldtek Technology Co., Ltd. (6638)?
Revenue at Goldtek Technology Co., Ltd. is growing −24.0% versus a year earlier (3y avg −20.9%). 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 Goldtek Technology Co., Ltd. (6638) generate?
The free cash flow of Goldtek Technology Co., Ltd. is −256M 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 cash does Goldtek Technology Co., Ltd. (6638) hold?
Goldtek Technology Co., Ltd. holds more cash than debt, 469M TWD net (fiscal year 2024). The company holds more cash than debt, a safety cushion.
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