Sunny Elec (004770) fair value: what the stock is really worth
As of Sep 23, 2026: fair value of Sunny Elec KRW 1,737, price KRW 2,005, upside -13.4%, quality 67 out of 100. Calculated from audited financials with 26 valuation models and 37 quality factors, updated daily.
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Price vs Fair Value
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 1,306 KRW – 6,307 KRW · fair‑value band 1,303 KRW – 1,979 KRW · the 2,005 KRW price screens above the 1,737 KRW 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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Sunny Electronics Corp., together with its subsidiaries, manufactures and sells crystal oscillator products in South Korea. It offers crystal units, crystal and MEMS oscillators, filters, VCXO oscillators, and TCXO and VCTCXO oscillators. The company was formerly known as Sunny Electric Engineering Co., Ltd. and changed its name to Sunny Electronics Corp.
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Sunny Electronics Corp., together with its subsidiaries, manufactures and sells crystal oscillator products in South Korea. It offers crystal units, crystal and MEMS oscillators, filters, VCXO oscillators, and TCXO and VCTCXO oscillators. The company was formerly known as Sunny Electric Engineering Co., Ltd. and changed its name to Sunny Electronics Corp. in March 1999. Sunny Electronics Corp. was founded in 1966 and is headquartered in Chungju-si, South Korea.
Stock analysis
Sunny Elec (004770) currently trades at 2,005 KRW, while our model-based Fair Value estimate is 1,737 KRW, implying the stock looks roughly 15.4% overvalued today.
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Valuation
Bull case: the Growth Earnings group reads highest at a median of 2,144 KRW per share, and 3 of the 22 models we run sit above the 2,005 KRW price.
Bear case: the Earnings-Based group reads lowest at 200.72 KRW, and 19 of the 22 models stay below the price. Evidence for this calculation is medium.
Scenario range: 1,303 KRW (bear) to 1,979 KRW (bull), the price of 2,005 KRW 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 67/100 (solid quality), in the Technology sector.
Weak Growth: Revenue is shrinking: the last year, the last three and the last five years are all negative.
Sunny Elec reported revenue of 12.4B KRW in FY2025 versus 16.4B KRW in FY2021, a compound −6.8%/yr. Reported net income was 3.6B KRW in FY2025, compounding −5.3%/yr from FY2021.
Key figures
Market cap 71.2B KRW (≈ $52.3M) · P/S ratio 4.17 · Dividend yield 1.7% · Net margin 29.3% · Return on equity 6.6% · Return on assets (EBIT) 2.2% · Operating margin 15.4% · Revenue (TTM) 13.9B KRW.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 46 out of 100 (low confidence).
What moves the price
The share trades about 16% below its 52-week high and 41% above its 52-week low, currently above its 200-day average.
For context, the median of 10 Technology peers we cover trades at −66% fair-value upside, at −13%, 004770 screens cheaper than that median.
Fair Value models
Bear 1,303 KRWFair Value 1,737 KRWBull 1,979 KRW
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.
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.40/100
Revenue is shrinking: the last year, the last three and the last five years are all negative.
Revenue growth 1 year
−3.5%
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.
−10.8%
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.
−5.5%
Start year 2020 (pandemic). Over 10 years: −6.1% a year
Revenue growth 25 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.
−7.2%
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What shareholders gained per year (last 5 years), in KRW ⓘWhat the business itself delivers per year: earnings growth per share plus the dividend yield. This is what you get IF the market keeps valuing the stock the same way: it contains no assumption about the market changing its mind. Computed per share, so buybacks count and a merger does not pass as growth. For a company that pays no dividend it is pure earnings growth per share. Period: earnings growth per share as CAGR over the last 5 reported fiscal years (annual statements), plus the current dividend yield. The start value is the median of the three years around the start, so a single crisis year (a pandemic or a write-down) does not distort the rate. Measured in KRW: this currency has depreciated against the euro and dollar over the long run, so part of the nominal rate is currency erosion that never reaches a EUR/USD investor.
−2.9%
Earnings growth per share plus dividend.
Earnings per share, growth per year−4.6%
Dividend (yield on the price)1.7%
Profit margin 2020 to 2025 ⓘ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% → 18%
⚠ Revenue per share shrinking 9.3%/yr over ~6Y (margins intact) ⓘStructural-decline marker: revenue PER SHARE has fallen over the last decade (robust median trend, not a single year). Backtested across 2005 to 2017, such businesses trailed the market by about 2.5 percentage points per year. Display only: it does not change the fair value or the quality score.
Growth Forecast
A lot of optimism in the price
The price assumes more growth than the company has delivered so far.
What the price assumes ⓘThis turns our valuation around: instead of asking what the share is worth, it asks what growth the current price requires. It uses the cash the company keeps after all spending (free cash flow), the same discount rate as our models, five years of growth, then slowing evenly to 2 % a year by year ten. Compared with the analysts' sales forecasts extended to the same five years (at least three analysts, for context only, it does not enter the Fair Value): within 3 percentage points counts as "in line" (amber), below that little optimism (green), above that a lot of optimism (red).
+8.3%
Yearly growth needed for the next five years to justify today's price.
What forecasts expect
n/a
No analyst forecast available.
After inflation (South Korea: IMF forecast 2.1% a year to 2030, 2.1% from 2016 to 2025) that is about +6.1% a year for the price.
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.Electronic Components · 655 stocks
Beats the industry median on 9/11 measures
Overall it ranks above its industry peers.
Valuation
Quality Score67 · Top 25%
Fair Value upside−13% · Above median
Profitability
Return on equity (TTM)7% · Above median
Return on assets1% · Below median
Net margin (TTM)35% · Top 25%
Operating margin (TTM)15% · Top 25%
Growth and dividend
Revenue growth−21% · Bottom 25%
Dividend yield (TTM)1.7% · Above median
Balance sheet
Debt / equity0.09× · Below median
Valuation Multiplesvs Electronic Components median · lower = cheaper
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Cite: Fair Value Calculator (2026). "Sunny Elec Fair Value". https://www.fairvalue-calculator.com/stock/004770
Frequently asked questions
Is Sunny Elec (004770) overvalued or undervalued?
As of Sep 24, 2026, our model estimates a fair value of 1,737 KRW versus a price of 2,005 KRW, about −13% upside (overvalued).
What is the fair value of 004770?
Our model-based fair value for Sunny Elec is 1,737 KRW (as of Sep 24, 2026), built from audited fundamentals. The current price: 2,005 KRW.
What is the quality score of 004770?
Sunny Elec has a Quality Score of 67/100. 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 Sunny Elec (004770)?
Our model-based price target is the fair value of 1,737 KRW (as of Sep 24, 2026) from 22 valuation models. Cautious scenario 1,303 KRW, optimistic scenario 1,979 KRW. It is a calculation from audited fundamentals, not an analyst target.
What is the Sunny Elec stock forecast for 2026?
Our models put fair value at 1,737 KRW, about −13% upside versus a price of 2,005 KRW (overvalued). Cautious scenario 1,303 KRW, optimistic scenario 1,979 KRW. The calculation is refreshed regularly with new filings.
What is the revenue of Sunny Elec (004770)?
Sunny Elec reported trailing-twelve-month revenue of about 13.9B KRW (latest available figure, as of Sep 24, 2026).
Does Sunny Elec pay a dividend?
Sunny Elec currently shows a dividend yield of about 1.75% relative to its recent price (as of Sep 24, 2026).
What growth is priced into Sunny Elec (004770)?
For today's price to be fair in a discounted-cash-flow model, Sunny Elec would have to grow free cash flow by +8.3 % per year for five years (discount rate 9.3 %, then slowing evenly to 2 % perpetual growth by year ten). Over the last 5 years revenue grew -5.5 % per year. As of Sep 24, 2026.
What discount rate (WACC) does the fair value of 004770 use?
Our models discount Sunny Elec at 9.3 %: a base by market capitalisation (nano), damped by beta 0.68, country premium for South Korea. The same rate applies in all 26 models.
What is a reverse DCF?
A reverse DCF turns the usual calculation around. Instead of deriving a value from assumptions, it takes today's price as given and asks: what free-cash-flow growth would a company have to deliver for exactly this price to be fair? The result is not a forecast but the expectation already priced in. For Sunny Elec that is +8.3 % per year a year over ten years, using the same discount rate (9.3 %) and the same formula as our fair value.
How much growth has Sunny Elec (004770) delivered so far?
Over the past 5 years revenue at Sunny Elec grew -5.5 % a year. The price currently implies +8.3 % per year free-cash-flow growth a year. Comparing the two shows how much confidence is in the price: if it demands more than has been delivered, the business has to accelerate for the maths to work.
How fast is the sector of Sunny Elec (004770) growing?
The median revenue growth in the sector is +8.2 % a year. That is the yardstick for the growth priced into Sunny Elec (+8.3 % per year a year): it shows whether the expectation is within the usual range or beyond it.
What is the free cash flow yield of Sunny Elec (004770)?
The free-cash-flow yield on the price is 5.52 %: that much free cash flow Sunny Elec produces per unit of market value. When it exceeds the discount rate of our models (9.3 %), the business already earns more than its cost of capital demands, and the price needs little additional growth.
What is the intrinsic value of Sunny Elec (004770)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Sunny Elec it is 1,737 KRW per share (as of Sep 24, 2026), against a price of 2,005 KRW. It is the blended result of 22 valuation models (cash flow, earnings, asset, dividend).
Is Sunny Elec stock overvalued or undervalued in 2026?
As of Sep 24, 2026, 004770 trades above its calculated fair value: price 2,005 KRW, fair value 1,737 KRW, a gap of about −13% (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 004770?
No. The price is what the market pays today (2,005 KRW); the fair value is what the company's own numbers justify (1,737 KRW). For Sunny Elec the two are 268.21 KRW per share apart. That gap is exactly why we show both numbers side by side.
How much is Sunny Elec worth?
The market values Sunny Elec at about 71.2B KRW (market capitalisation, as of Sep 24, 2026). Per share that is 2,005 KRW; our models calculate a fair value of 1,737 KRW per share.
What do the bullish and bearish scenarios say about 004770?
Our models span a range for Sunny Elec: cautious scenario 1,303 KRW, base 1,737 KRW, optimistic 1,979 KRW per share (as of Sep 24, 2026, price 2,005 KRW). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of Sunny Elec (004770)?
Balance-sheet figures for Sunny Elec (as of Sep 24, 2026): return on equity 6.6%, debt of 0.09 per unit of equity. They feed the Quality Score of 67/100, which measures business quality independently of the share price.
How far is 004770 from its 52-week high?
Sunny Elec trades at 2,005 KRW, about 16% below its 52-week high of 2,375 KRW and 41% above the low of 1,418 KRW (as of Sep 23, 2026). Distance from the high says nothing about value: that is what the fair value of 1,737 KRW is for.
Which stocks are comparable to Sunny Elec?
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 Sunny Elec stock attractive at the current price?
The data as of Sep 24, 2026: price 2,005 KRW, calculated fair value 1,737 KRW (−13%), Quality Score 67/100, from 22 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 004770 calculated?
We run Sunny Elec through 22 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 1,737 KRW, 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. Sunny Elec 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 Sunny Elec (004770)?
The closing price on Sep 23, 2026 was 2,005 KRW. Our model-based fair value is 1,737 KRW, about −13% upside (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Sunny Elec right now?
Solid but not exceptional quality (67/100) and above fair value, neither a clear bargain nor a standout compounder. The price sits above our optimistic bull case: the favourable scenario is already priced in. Read the verdict with care: some models are missing inputs, so the estimate scatters more than usual.
Key figures of Sunny Elec
How large is the market capitalisation of Sunny Elec (004770)?
The market capitalisation of Sunny Elec is 71.2B KRW (≈ $52.3M). 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 Sunny Elec (004770)?
The price-to-sales ratio of Sunny Elec is 4.17 (last twelve months). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What is the dividend yield of Sunny Elec (004770)?
The dividend yield of Sunny Elec is 1.7%. 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 Sunny Elec (004770)?
The net margin of Sunny Elec is 29.3% (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 Sunny Elec (004770)?
The return on equity (ROE) of Sunny Elec is 6.6% (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 Sunny Elec (004770)?
On an EBIT basis the return on assets of Sunny Elec is 2.2% (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 Sunny Elec (004770)?
The operating margin of Sunny Elec is 15.4% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Sunny Elec (004770)?
Revenue at Sunny Elec is growing −20.6% versus a year earlier (3y avg −10.8%). 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 Sunny Elec (004770)?
Earnings per share at Sunny Elec are growing −31.6% versus a year earlier. How much earnings per share grew versus a year earlier.
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