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Data-driven stock valuation

NGK Spark Plug Co Ltd ADR (NGKSY) fair value: what the stock is really worth

We calculate from audited financials what NGK Spark Plug Co Ltd ADR is really worth. The fair value tells you whether the price is too high or too low, the quality score (0 to 100) how solid the business behind it is. 26 models, 37 quality factors, updated daily, free.

  1. Compare price with fair valuebelow fair value = cheap, above = expensive
  2. Check the quality50 and up solid, 75 and up strong
  3. Watch it or check another stockalert when fair value or trend changes

Consumer Cyclical · US · Market cap $9.8B · ISIN US62913J1043

At a glance

NS NGK Spark Plug Co Ltd ADR logo NGK Spark Plug Co Ltd ADR NGKSY · US
Price$25.18
Fair Value$35.45
Upside+40.8%
Quality63/100

A solid business, trading 29% below our fair value of $35.45.

As of Sep 8, 2026, the fair value of NGK Spark Plug Co Ltd ADR is $35.45 per share against a price of $25.18, so the fair value sits 41% above the price. A model estimate from reported figures, not an analyst target.

✓Healthy Growth (revenue 5y +12.6 %/yr)
✓Solidly profitable · 15.4% net margin
✓Low debt · generates free cash flow
·2.59% dividend yield
✓Ranks above peers (11/14)
!Moderate moat 56/100
!Evidence only medium, so the estimate is less certain
Evidence: Medium Range $21.16 to $54.78

Fair value as of: Sep 8, 2026

From 24 valuation models · updated today

Fair value updated Sep 8, 2026, revised from $34.36 to $35.45 (+3.2%) since Aug 21, 2026. Share price −15.7% over the past month.

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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 →

What matters now

  • Solid quality (63/100) at a price below fair value, the discount is the argument here, not the business quality.
  • A fairly wide model range ($21.16 to $54.78) leaves room in how you read the outcome.

Price vs Fair Value (5 years)

$33.26 $5.18 Fair Value $35.45 Dec 2015 Sep 2026

White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Sep 8, 2026.

How to read this chart

60‑month range $5.18 – $33.26 · fair‑value band $21.16 – $54.78 · the $25.18 price screens below the $35.45 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Sep 8, 2026.

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Analysis

NGK Spark Plug Co Ltd ADR (NGKSY) currently trades at $25.18, while our model-based Fair Value estimate is $35.45, implying the stock looks roughly 29.0% undervalued today. The Quality Score stands at 63/100 (solid quality), in the Consumer Cyclical sector. Bull case: the Growth Earnings group reads highest at a median of $41.83 per share, and 11 of the 24 models we run sit above the $25.18 price. Bear case: the Asset-Based group reads lowest at $8.98, and 13 of the 24 models stay below the price. Evidence for this calculation is medium.

Over the trailing twelve months, NGK Spark Plug Co Ltd ADR generated revenue of ¥731B at a net margin of 15.4%. Revenue grew 22.6% year over year. It earns a return on equity of 16.1%. Net debt stands at ¥55.0B. Fundamentals as of Sep 8, 2026

Scenario range: $21.16 (bear) to $54.78 (bull), the price of $25.18 sits inside it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target. The share trades about 3% below its 52-week high and 59% above its 52-week low, currently above its 200-day average. For context, the median of 10 Consumer Cyclical peers we cover trades at −38% fair-value upside, at 41%, NGKSY screens cheaper than that median.

Fair Value models

Each model values the company its own way; the fair value above is the evidence-weighted blend. Evidence (0 to 100) shows how complete a model's inputs are. How we calculate →

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
Highest evidence
FCF DCF $15.69 $24.21 $37.07 79
Growth DCF $15.82 $23.18 $33.50 78
Owner Earnings $25.61 $39.83 $61.28 75
All 24 models by family
DCF Models
FCF DCF $15.69 $24.21 $37.07 79
Owner Earnings $25.61 $39.83 $61.28 75
5Y Revenue Exit $13.12 $20.20 $29.25 72
5Y EBITDA Exit $23.87 $40.74 $60.85 74
5Y P/E Exit $25.93 $44.68 $64.84 70
10Y Revenue Exit $13.59 $20.25 $29.31 66
10Y EBITDA Exit $20.68 $34.36 $53.36 67
10Y P/E Exit $21.98 $37.06 $56.40 63
Earnings-Based
Graham-Dodd $14.15 $48.76 $65.47 64
Lynch FV $11.26 $16.09 $20.91 61
PEG = 1.0 $11.26 $16.09 $20.91 57
EPV $16.17 $18.59 $20.67 74
Multiples
P/E Multiple $34.34 $45.79 $57.23 63
P/S Multiple $12.13 $16.18 $20.22 58
P/B Multiple $26.54 $35.38 $44.23 55
EV/EBIT $35.80 $47.45 $59.10 66
EV/EBITDA $31.62 $41.87 $52.13 67
EV/Revenue $12.17 $17.02 $21.87 54
Asset-Based
NCAV (Graham) $6.70 $8.98 $13.40 54
Growth DCF
Growth DCF $15.82 $23.18 $33.50 78
Rev-Margin DCF $13.12 $20.24 $28.67 72
Economic Profit
Residual Income $13.37 $17.46 $45.61 62
ROIC Compounder $16.89 $21.22 $26.60 72
Growth Earnings
Growth-Adj P/E $29.28 $41.83 $54.38 67

Widest divergence: Growth Earnings ($41.83) versus Asset-Based ($8.98). Highest evidence: FCF DCF (79).

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Key figures & financial health

P/E ratio 14.1
P/S ratio 2.18 P/E × margin
EPS (TTM) $1.78 price ÷ EPS = P/E 14.1
Dividend yield 2.6% payout 36.6%
Net margin 15.4% FY2026
Return on equity 16.1% TTM
More key figures
Profitability
Return on assets (EBIT) 11.0% avg 5y
Operating margin 13.1% TTM
Growth
Revenue (TTM) ¥731B TTM
Revenue growth (YoY) +22.6% 3y avg +11.3%
EPS growth (YoY) +63.1%
Balance sheet & cash flow
Free cash flow ¥77.0B FY2026
Net debt ¥55.0B FY2026 · ≈ 0.7 yrs of FCF

Figures from reported company fundamentals · as of Sep 8, 2026. TTM = trailing twelve months.

Quality Score breakdown

Overall quality 63/100

Of which business quality 62 · Market factors (momentum, volatility) 76

Profitability 55
Margins and returns on capital today
Quality Growth 47
Are margins and returns improving?
Cashflow 48
Earnings quality: real cash, not paper profit
Fin. Strength 79
Balance sheet, leverage, solvency risk
Investment 58
Disciplined investing over empire-building
Low Volatility 50
Calm price path (market factor)
Momentum 82
Price trend over the last 3–12 months (market factor)
52W Momentum 97
Distance to the 52-week high (market factor)
Net Issuance 88
Buybacks instead of dilution

Non-valuation factor families (profitability, growth, cashflow, financial strength, momentum …), each academically grounded. Valuation itself sits in the Fair Value and is deliberately excluded here to avoid double-counting.

All values are scores from 0 to 100 (100 = best against fixed, research-based bands), not percentages. The three market factors (momentum, 52-week proximity, low volatility) are displayed but carry zero weight in the headline number: market sentiment is not a business property.

About the company

Niterra Co., Ltd., together with its subsidiaries, manufactures and sells spark plugs and related products for internal-combustion engines and technical ceramics in Japan and internationally.

Full company description

Niterra Co., Ltd., together with its subsidiaries, manufactures and sells spark plugs and related products for internal-combustion engines and technical ceramics in Japan and internationally. The company offers spark plugs, including plugs for aftermarket and original equipment, igniter plugs, and resistor cables and covers; glow plugs comprising ceramic and metal type glow plugs, and glow controllers; and oxygen, NOx, temperature, and knock sensors. It also provides semiconductor packages used in all kinds of products, including smartphones, cameras, and cars, as well as manufacturing parts for semiconductors, and medical products. In addition, the company offers fine ceramics, balls for bearings, piezoelectric ceramics, other industrial ceramics such as plungers for pumps and ceramic protective plates, including wear-resistant parts, ultrasonic transducers and sensors, products for semiconductor manufacturing equipment, electric equipment products, and other ceramic products. Further, it provides cutting tools comprising ceramic, micro grain carbide, coated carbide, and cubic boron nitride grades, as well as SS and rotational tools; and sumikaze, a sterilization deodorizer utilizes ozone to purify the air and inhibit invisible harmful substances and viruses. The company sells its spark and glow plugs under the NGK brand; and sensors, semiconductor packages/substrates, cutting tools, oxygen concentrators, and piezoelectric and fine ceramics under the NTK brand. The company was formerly known as NGK Spark Plug Co., Ltd. and changed its name to Niterra Co., Ltd. in April 2023. Niterra Co., Ltd. was founded in 1936 and is headquartered in Nagoya, Japan.

Company description, as reported by the company or data provider.

Revenue & earnings trend

FY2022 – FY2026 · reported fiscal years

NGK Spark Plug Co Ltd ADR reported revenue of ¥775B in FY2026 versus ¥492B in FY2022, a compound +12.1%/yr. Reported net income was ¥120B in FY2026, compounding +18.7%/yr from FY2022.

Growth Quality 97/100
Revenue growth appears healthy and is supported by profitability and cash-flow quality.
Latest Revenue (FY 2026)
$775B
Latest YoY
+18.7%
Avg. revenue growth/yr (3Y) ⓘ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.
+11.3%
Avg. revenue growth/yr (5Y) ⓘ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.
+12.6%
Avg. revenue growth/yr (21Y) ⓘ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.
+5.7%
Value creation/yr (5Y, in JPY) ⓘEarnings growth per share (CAGR 5 years) plus dividend yield: value created per share and year. Measured in JPY: 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.
+28.8%
Earnings growth per share plus dividend yield: the value created per share and year.
Earnings growth per share+26.2%
Dividend yield2.6%
Trend ⓘTwo data points, not a trend model: earnings growth per share over the last 5 fiscal years against the last 10. Labelled "steady" when both rates are within 3 percentage points of each other, otherwise picking up or flattening. Shown only when ten years of history exist.5Y 26.2% vs 10Y 15.6%, picking up
Operating margin (EBIT) ⓘ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.10.8% (2021) → 19.2% (2026) · rising
Worst earnings drop325% (2009) (loss year, drop beyond 100%) · in USD
Revenue +12.1%/yr
FY22 ¥492B
FY23 ¥563B
FY24 ¥614B
FY25 ¥653B
FY26 ¥775B
Net income +18.7%/yr
FY22 ¥60.2B
FY23 ¥66.3B
FY24 ¥82.6B
FY25 ¥92.6B
FY26 ¥120B
Character of growth · EPS growth decomposed (2015-2026) +14.7 % p.a.
Revenue per share +8.1 %

of which total revenue +7.1 % · buybacks/dilution +0.9 %

EBIT margin +1.5 %
Tax rate +0.1 %
Residual (interest, one-offs) +4.4 %

Annual growth per factor. These are factors, not summands: multiplied they give the EPS growth rate, added they do not quite. Start and end points are 3-year averages (details on hover).

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NGK Spark Plug Co Ltd ADR · Fair Value
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Cite: Fair Value Calculator (2026). "NGK Spark Plug Co Ltd ADR Fair Value". https://www.fairvalue-calculator.com/stock/NGKSY

Peer Group

Auto Parts · 640 stocks

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.

Valuation
Quality Score 63 · Top 25%
Fair Value upside +37% · Top 25%
Profitability
Return on equity (TTM) 16% · Top 25%
Return on assets 8% · Top 25%
Net margin (TTM) 15% · Top 25%
Operating margin (TTM) 13% · Top 25%
Growth and dividend
Revenue growth 23% · Top 25%
Dividend yield (TTM) 2.6% · Above median
Balance sheet
Debt / equity 0.18× · Above median

Valuation Multiples vs Auto Parts median · lower = cheaper

P/E (TTM) 14.1× · Cheaper than median
P/FCF 0.1× · Cheapest 25%

What the price implies (reverse DCF)

The inverse question: what free-cash-flow growth must NGK Spark Plug Co Ltd ADR deliver for ten years so that today's price is fair in our DCF model? Same formula, same discount rate as the fair value.

Implied FCF growth, 10 years+4.9 % per year
Achieved revenue growth, 5 years+12.6 % p.a.
Sector median revenue growth+2.6 %
FCF yield on price5.03 %
Discount rate (WACC) in the models8.5 %

The price demands less growth than the company recently delivered: even a weaker business would justify the price. Ranking of the largest stocks →

Context: sector, industry, market

Strength profile in five axes (Snowflake)

Five quick dimensions, each 0 to 100: VALUE (fair-value potential), FUTURE (revenue growth), PAST (return on equity), HEALTH (low debt), DIVIDEND (yield). Green = this stock, grey = typical sector peer.

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE88 · sector 16
FUTURE100 · sector 21
PAST64 · sector 28
HEALTH91 · sector 95
DIVIDEND52 · sector 32

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 Auto Parts stocks, each showing price versus our Fair Value estimate (as of Sep 8, 2026).

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Samvardhana Motherson International Limited MOTHERSON ₹165.30 ₹80.63 −51%
Magna International Inc MGA $65.57 $68.17 +4%
Genuine Parts Company GPC $138.08 $58.07 −58%
Bosch Limited BOSCHLTD ₹48,700 ₹11,534 −76%
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Frequently asked questions

Is NGK Spark Plug Co Ltd ADR (NGKSY) overvalued or undervalued?
As of Sep 8, 2026, our model estimates a fair value of $35.45 versus a price of $25.18, about +41% upside (undervalued).
What is the fair value of NGKSY?
Our model-based fair value for NGK Spark Plug Co Ltd ADR is $35.45 (as of Sep 8, 2026), built from audited fundamentals. The current price: $25.18.
What is the quality score of NGKSY?
NGK Spark Plug Co Ltd ADR has a Quality Score of 63/100. 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 NGK Spark Plug Co Ltd ADR (NGKSY)?
Our model-based price target is the fair value of $35.45 (as of Sep 8, 2026) from 24 valuation models. Cautious scenario $21.16, optimistic scenario $54.78. It is a calculation from audited fundamentals, not an analyst target.
What is the NGK Spark Plug Co Ltd ADR stock forecast for 2026?
Our models put fair value at $35.45, about +41% upside versus a price of $25.18 (undervalued). Cautious scenario $21.16, optimistic scenario $54.78. The calculation is refreshed regularly with new filings.
What is the revenue of NGK Spark Plug Co Ltd ADR (NGKSY)?
NGK Spark Plug Co Ltd ADR reported trailing-twelve-month revenue of about ¥731B (latest available figure, as of Sep 8, 2026).
What is the net profit margin of NGKSY?
The net profit margin of NGK Spark Plug Co Ltd ADR is about 15.4%, meaning it keeps roughly 15.4% of revenue as net income. Based on the latest reported figures.
Does NGK Spark Plug Co Ltd ADR pay a dividend?
NGK Spark Plug Co Ltd ADR currently shows a dividend yield of about 2.59% relative to its recent price (as of Sep 8, 2026).
What growth is priced into NGK Spark Plug Co Ltd ADR (NGKSY)?
For today's price to be fair in a discounted-cash-flow model, NGK Spark Plug Co Ltd ADR would have to grow free cash flow by +4.9 % per year for ten years (discount rate 8.5 %, then 2 % perpetual growth). Over the last 5 years revenue grew +12.6 % per year. As of Sep 8, 2026.
What discount rate (WACC) does the fair value of NGKSY use?
Our models discount NGK Spark Plug Co Ltd ADR at 8.5 %: a base by market capitalisation (mid), damped by beta 0.30, country premium for USA. The same rate applies in all 26 models.
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