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East Tender Opto (6588) fair value: what the stock is really worth

As of Nov 6, 2026: fair value (intrinsic value) of East Tender Opto stock TWD 88.25, price TWD 68.30, upside +29.2%, quality 46 out of 100. Rating: undervalued. Calculated from audited financials with one of our 26 valuation models and 37 quality factors, updated daily.

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Technology TW

ET East Tender Opto logo Thin data Nov 3, 2026

East Tender Opto

6588 · TWO
Speculative

The stock costs 23% less than our calculation considers fair.

Fair value 88.25 TWD · Undervalued (23%)
Low debt
Revenue last quarter +102% vs. a year ago.
Quality 46/100
Thin margins · 2.3% net margin (TTM)
Weak Growth (revenue 3y +0.6 %/yr in TWD)
Negative free cash flow
Trails peers (3/12)
Narrow moat 26/100
Thin data
⟳ Cyclical
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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

159.50 TWD 25.45 TWD Fair Value 88.25 TWD Jun 2021 Nov 2026

White line = price, green steps = our fair value per fiscal year. As of Nov 3, 2026.

How to read this chart

60‑month range 25.45 TWD – 159.50 TWD · fair‑value band 58.29 TWD – 110.39 TWD · the 68.30 TWD price screens below the 88.25 TWD fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Nov 3, 2026.

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Company profile

East Tender Optoelectronics Corporation manufactures optical filters and components for optics, photonics, and optical communication in Taiwan, Mainland China, Slovakia, Hong Kong, South Korea, and internationally.

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It offers LIDAR, LWDM, WDM, bio-photonics, band separator, edge, MWDM, FWDM, DWDM, TAP, transmission attenuation plates, triplexer, CWDM, and dual band pass filters, AR and mirror coating, PBS/PBC, prisms, and optical blocks.

Its products are used in cloud data centers, optical communication active and passive components, and customized filters. The company was founded in 1989 and is based in Yilan City, Taiwan.

Stock analysis

East Tender Opto (6588) currently trades at 68.30 TWD, while our model-based Fair Value estimate is 88.25 TWD, implying the stock looks roughly 23% undervalued 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 data coverage at low.

Scenario range: 58.29 TWD (bear) to 110.39 TWD (bull), the price of 68.30 TWD 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 46/100 (below-average quality), in the Technology sector.

Weak Growth: Revenue growth is weak: less than 2 % a year.

East Tender Opto reported revenue of 173M TWD in FY2025 versus 203M TWD in FY2021, a compound −3.9%/yr. Reported net income was −61.3M TWD in FY2025.

Key figures

Market cap 2.4B TWD (≈ $73.7M) Micro · P/E ratio 359.5 · P/S ratio 8.69 · EPS (TTM) 0.1900 TWD · Net margin 2.3% · Return on equity 0.1% · Return on assets (EBIT) −5.5% (5-year average) · Operating margin 12.9%.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 26 out of 100 (medium confidence).

What moves the price

The share trades about 57% below its 52-week high and 153% above its 52-week low, currently below its 200-day average.

For context, the median of 10 Technology peers we cover trades at −7% fair-value upside, at 29%, 6588 screens cheaper than that median.

Fair Value models

Bear 58.29 TWD Fair Value 88.25 TWD Bull 110.39 TWD
Price 68.30 TWD · Upside +29.2%
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. Based on fiscal year 2025 figures (about 10 months old). Earnings retained since then (0.1624 TWD per share) are deliberately not added. 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) 58.29 TWD 88.25 TWD 110.39 TWD 54
All 1 models by family
Asset-Based
NCAV (Graham) 58.29 TWD 88.25 TWD 110.39 TWD 54

Open the full fair value analysis →

Quality Score breakdown

Overall quality 46/100

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

Profitability 0
How much profit the company makes from its sales and capital
Quality Growth 92
Are margins and returns getting better?
Cashflow 10
Do the profits arrive as real cash?
Financial strength 96
Debt, balance sheet and risk of trouble
Investment 55
Does it invest with discipline instead of growing at any price?
Low Volatility 32
How calm the share price moves, does not count
Price momentum 39
Price momentum of the last 3 to 12 months, does not count
Near the 52-week high 66
Distance to the 52-week high, does not count
New shares 41
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. 20/100
Revenue growth is weak: less than 2 % a year.
Revenue growth 1 year
+27.5%
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.
+0.6%
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.
8.7% (2021) → −36.3% (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
not computed

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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.Semiconductors · 370 stocks

Beats the industry median on 3/12 measures
Overall it trails its industry peers.
Valuation
Quality Score 46 · Below median
Fair Value upside +29.2% · Top 25%
Profitability
Return on equity (12 months) 0.1% · Below median
Return on assets −5.1% · Bottom 25%
Net margin (12 months) 2.3% · Below median
Operating margin (12 months) 12.9% · Above median
Growth and dividend
Revenue growth (quarter YoY) 102.0% · Top 25%
Balance sheet
Debt / equity 0.16× · Above median

Valuation Multiplesvs Semiconductors median · lower = cheaper

P/E (12 months) 359.5× · Priciest 25%
P/B 3.16× · Pricier than median
P/S (12 months) 8.69× · Priciest 25%
EV/EBITDA 55.9× · Priciest 25%

Strength profile in five axes (Snowflake)

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE (fair-value potential)72 · sector 0
FUTURE (revenue growth)100 · sector 100
PAST (return on equity)0 · sector 28
HEALTH (low debt)92 · sector 96
DIVIDEND (yield)0 · sector 20

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 Semiconductors stocks, each showing price versus our Fair Value estimate.

Stock Price Fair Value vs Fair Value Compare
SK hynix Inc 000660 1,132,000 KRW 1,501,896 KRW +33% vs 6588
Taiwan Semiconductor Manufacturing Company TSM $375.44 $412.98 +10% vs 6588
NVIDIA Corporation NVDA $186.64 $198.56 +6% vs 6588
Broadcom Inc AVGO $293.69 $300.84 +2% vs 6588
Intel Corporation INTC $56.28 $52.14 −7% vs 6588
Micron Technology, Inc MU $690.00 $619.48 −10% vs 6588
Analog Devices, Inc ADI $363.56 $262.04 −28% vs 6588
Marvell Technology, Inc MRVL $141.20 $87.64 −38% vs 6588
Advanced Micro Devices, Inc AMD $449.04 $148.02 −67% vs 6588
Texas Instruments Incorporated TXN $277.36 $81.25 −71% vs 6588

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East Tender Opto: fair value per Fair Value Calculator

Cite: Fair Value Calculator (2026). "East Tender Opto Fair Value". https://www.fairvalue-calculator.com/stock/6588

Frequently asked questions

Is East Tender Opto (6588) overvalued or undervalued?
As of Nov 3, 2026, our model estimates a fair value of 88.25 TWD versus a price of 68.30 TWD, about +29% upside (undervalued).
What is the fair value of 6588?
Our model-based fair value for East Tender Opto is 88.25 TWD (as of Nov 3, 2026), built from audited fundamentals. The current price: 68.30 TWD.
What is the quality score of 6588?
East Tender Opto has a Quality Score of 46/100. 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 East Tender Opto (6588)?
Our model-based price target is the fair value of 88.25 TWD (as of Nov 3, 2026) from 1 valuation models. Cautious scenario 58.29 TWD, optimistic scenario 110.39 TWD. It is a calculation from audited fundamentals, not an analyst target.
What is the East Tender Opto stock forecast for 2026?
Our models put fair value at 88.25 TWD, about +29% upside versus a price of 68.30 TWD (undervalued). Cautious scenario 58.29 TWD, optimistic scenario 110.39 TWD. The calculation is refreshed regularly with new filings.
What is the revenue of East Tender Opto (6588)?
East Tender Opto reported trailing-twelve-month revenue of about 278M TWD (latest available figure, as of Nov 3, 2026).
What is the intrinsic value of East Tender Opto (6588)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For East Tender Opto it is 88.25 TWD per share (as of Nov 3, 2026), against a price of 68.30 TWD. It is the blended result of 1 valuation models in 1 family (Asset-Based).
Is East Tender Opto stock overvalued or undervalued in 2026?
As of Nov 3, 2026, 6588 trades below its calculated fair value: price 68.30 TWD, fair value 88.25 TWD, a gap of about +29% (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 6588?
No. The price is what the market pays today (68.30 TWD); the fair value is what the company's own numbers justify (88.25 TWD). For East Tender Opto the two are 19.95 TWD per share apart. That gap is exactly why we show both numbers side by side.
How much is East Tender Opto worth?
The market values East Tender Opto at about 2.4B TWD (market capitalisation, as of Nov 3, 2026). Per share that is 68.30 TWD; our models calculate a fair value of 88.25 TWD per share.
What do the bullish and bearish scenarios say about 6588?
Our models span a range for East Tender Opto: cautious scenario 58.29 TWD, base 88.25 TWD, optimistic 110.39 TWD per share (as of Nov 3, 2026, price 68.30 TWD). The range comes from different growth and margin assumptions, not from analyst opinions.
What is the P/E ratio of 6588?
East Tender Opto trades at a price-to-earnings ratio of 359.5 (as of Nov 3, 2026). A P/E on its own says little: it compares the price with ONE year of profit, while our fair value of 88.25 TWD is built from several models across several years. Other multiples: P/B 3.2, P/S 8.7, EV/EBITDA 55.9.
How solid is the balance sheet of East Tender Opto (6588)?
Balance-sheet figures for East Tender Opto (as of Nov 3, 2026): return on equity 0.1%, debt of 0.16 per unit of equity. They feed the Quality Score of 46/100, which measures business quality independently of the share price.
How far is 6588 from its 52-week high?
East Tender Opto trades at 68.30 TWD, about 57% below its 52-week high of 159.50 TWD and 153% above the low of 27.00 TWD (as of Nov 6, 2026). Distance from the high says nothing about value: that is what the fair value of 88.25 TWD is for.
Which stocks are comparable to East Tender Opto?
From the same area (Technology) we also value NVIDIA Corporation, Taiwan Semiconductor Manufacturing Company, Broadcom Inc, Micron 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 East Tender Opto stock attractive at the current price?
The data as of Nov 3, 2026: price 68.30 TWD, calculated fair value 88.25 TWD (+29%), Quality Score 46/100, 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 6588 calculated?
We run East Tender Opto through 1 models from 1 family: Asset-Based. Every model gets the same audited fundamentals; the fair value of 88.25 TWD 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 13.0% above its aggregate fair value. East Tender Opto currently trades 23% 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 East Tender Opto (6588)?
The closing price on Nov 6, 2026 was 68.30 TWD. Our model-based fair value is 88.25 TWD, about +29% upside (undervalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with East Tender Opto right now?
A fairly wide model range (58.29 TWD to 110.39 TWD) leaves room in how you read the outcome. Evidence is limited here (fewer models, shorter history), so the fair value is a rougher estimate than usual.

Key figures of East Tender Opto

How large is the market capitalisation of East Tender Opto (6588)?
The market capitalisation of East Tender Opto is 2.4B TWD (≈ $73.7M). 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 East Tender Opto (6588)?
The price-to-sales ratio of East Tender Opto is 8.69 (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 East Tender Opto (6588)?
Earnings per share at East Tender Opto are 0.1900 TWD (price ÷ EPS = P/E 359.5). Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of East Tender Opto (6588)?
The net margin of East Tender Opto is 2.3% (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 East Tender Opto (6588)?
The return on equity (ROE) of East Tender Opto is 0.1% (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 East Tender Opto (6588)?
On an EBIT basis the return on assets of East Tender Opto is −5.5% (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 East Tender Opto (6588)?
The operating margin of East Tender Opto is 12.9% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at East Tender Opto (6588)?
Revenue at East Tender Opto is growing +102% versus a year earlier (3y avg +0.6%). 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 East Tender Opto (6588) generate?
The free cash flow of East Tender Opto is −188M 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 East Tender Opto (6588) carry?
The net debt of East Tender Opto is 2.0M TWD (fiscal year 2023). 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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