Idemitsu Kosan Co (IDKOY) Fair Value & Analysis
Energy · US · Market cap $9.5B
Idemitsu Kosan Co
IDKOY · US
Fair value as of: Jul 16, 2026
From 26 valuation models · updated 9 days ago
Share price +3.0% over the past month.
Price vs Fair Value (12 months)
12‑month range $11.04 – $20.74 · fair‑value band $19.73 – $32.88 · the $16.32 price screens below the $26.30 fair value. As of Jul 16, 2026.
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Idemitsu Kosan Co (IDKOY) currently trades at $16.32, while our model-based Fair Value estimate is $26.30, implying the stock looks roughly 61.2% undervalued today. We read business quality at 59/100 (solid quality), in the Energy sector. Bull case: trading below our estimate, it may offer upside if the fundamentals hold. Bear case: a low price can be a value trap when quality is weak or the data is thin (evidence: high), always confirm before acting.
Over the trailing twelve months, Idemitsu Kosan Co generated revenue of $8.1T at a net margin of 2.1%. Revenue declined 9.8% year over year. It earns a return on equity of 2.1%. Net debt stands at $1.2T. Fundamentals as of Jul 16, 2026
Our scenario range runs from $19.73 (bear case) to $32.88 (bull case); at $16.32, the current price sits below that range. The share trades about 21% below its 52-week high and 42% above its 52-week low, currently above its 200-day average. For context, the median of 10 Energy peers we cover trades at -38% fair-value upside, at 61%, IDKOY screens cheaper than that median.
Key figures & financial health
More key figures
Figures from reported company fundamentals (EODHD) · as of Jul 16, 2026. TTM = trailing twelve months.
About the company
Idemitsu Kosan Co.,Ltd. engages in the fuel oil, basic chemicals, functional materials, power and renewable energy, and resources businesses in Japan, Singapore, Asia, Oceania, North America, and internationally. The Fuel Oil segment engages in the production, sale, import, export, and trading in petroleum refined products comprising sustainable aviation fuel, synthetic fuel, biofuels, and carbon offset fuel; and operation of service stations that provide refueling, car wash, vehicle inspection, and maintenance services. Its Basic Chemicals segment produces and sells olefin and aromatic products, which include ethylene, propylene, linealene/alpha olefin, paraxylene, cyclohexane, and styrene monomer. The Functional Materials segment offers lubricants, functional chemicals, electronic materials, and bitumen/functional paving materials, as well as agri-bio products, pesticides and functional feed products. Its Renewable Energy segment engages in power generation from thermal, solar, …
Revenue & earnings trend
FY2022 – FY2026 · reported fiscal years
Idemitsu Kosan Co reported revenue of $8.6T in FY2026 versus $6.7T in FY2022, a compound +6.5%/yr. Reported net income was $182B in FY2026, compounding −10.1%/yr from FY2022.
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Recent news
- Quaise Energy Raises $134 Million in Initial Close of Series B to Build World’s First Superhot Geothermal Power Plant
- Thea Energy Raises $100 Million Series B Funding to Build Scalable Fusion Power Plants
- Assessing Idemitsu Kosan (TSE:5019) Valuation After Recent Mixed Share Price Performance
- EIG’s MidOcean Energy Announces Initial Equity Raise of $1.2 billion Versus $1.0 billion Cover
External third-party headlines (Yahoo Finance, Reuters and others), not an editorial selection, not financial advice.
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| ENEOS Holdings JXHLY | $16.46 | $17.72 | +8% |
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| HF Sinclair Corporation DINO | $70.76 | $43.77 | -38% |
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How we calculate Fair Value
Each company is valued through a stack of independent intrinsic-value models (DCF variants, residual-income, multiples and more), blended into one family-balanced consensus and weighted by how much trustworthy data backs it. A separate quality layer scores the fundamentals. Every input is real reported data, nothing guessed.
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Not financial advice · no buy/sell recommendation. Model-based estimates are not certainties; their reliability depends on data quality and assumptions.