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    Is Idemitsu KosanLtd (TSE:5019) Cheap Following Its Strong First Quarter Results?

    Simply Wall St·08/15/2026 01:26:21
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    Idemitsu KosanLtd (TSE:5019) is in focus after reporting first quarter results on 7 August 2026, with sales of ¥2,271,753 million and net income of ¥217,504 million for the period ended 30 June.

    See our latest analysis for Idemitsu KosanLtd.

    The latest earnings have kept Idemitsu KosanLtd in focus, with the share price at ¥1,306.5 after a 1-day share price return of 1.83%. The year-to-date share price return of 10.77% contrasts with a softer 90-day decline of 8.51%, while the 5-year total shareholder return of 210.99% highlights momentum built over a longer horizon.

    If Idemitsu KosanLtd’s earnings move has you reviewing the energy space, it can also be useful to look at related resource producers through our 9 top copper producer stocks

    After that first quarter jump in earnings and a market value around ¥1,306.5 per share, the spread between Idemitsu KosanLtd’s trading price, analyst targets and intrinsic estimates really matters. Where does fair value actually sit now?

    Price-to-Earnings of 4.3x: Is it justified?

    On the latest figures, Idemitsu KosanLtd trades on a P/E of 4.3x, and the stock is also assessed as trading at good value compared to peers and industry. That sits alongside a 23.7% discount to an estimated fair value and a share price of ¥1,306.5, which points to a market valuation below several reference points.

    The P/E multiple compares the current share price to earnings per share. For a company like Idemitsu KosanLtd in the oil and gas sector, investors often look at this ratio to gauge how the market is pricing its current earnings power. A lower P/E can indicate that investors are placing a lower value on each unit of earnings, whether because of sector cycles, business mix or expectations for future profits.

    Here, the picture is that Idemitsu KosanLtd is trading at what is described as good value on several measures. The P/E of 4.3x is below the peer average of 8.4x and also below an estimated fair P/E of 7.2x. Compared with the wider Asian oil and gas industry average P/E of 11.9x, the gap is even wider. This suggests the current earnings multiple is well below levels that comparable companies trade on and below where the ratio could move if the market reassessed the stock.

    Explore the SWS fair ratio for Idemitsu KosanLtd

    Result: Price-to-Earnings of 4.3x (UNDERVALUED)

    However, Idemitsu KosanLtd’s revenue and net income have both declined on an annual basis, and the multi segment model exposes earnings to swings across fuel, chemicals, and resources.

    Find out about the key risks to this Idemitsu KosanLtd narrative.

    Another view on Idemitsu KosanLtd’s value

    The SWS DCF model presents another perspective on value for Idemitsu KosanLtd. With the share price at ¥1,306.5 and an estimated future cash flow value of ¥1,712.54, the stock appears undervalued on this second lens as well. How comfortable are you with an assessment based mainly on discounted cash flows?

    Look into how the SWS DCF model arrives at its fair value.

    5019 Discounted Cash Flow as at Aug 2026
    5019 Discounted Cash Flow as at Aug 2026

    Simply Wall St performs a discounted cash flow (DCF) on every stock in the world every day (check out Idemitsu KosanLtd for example). We show the entire calculation in full. You can track the result in your watchlist or portfolio and be alerted when this changes, or use our stock screener to discover 26 high quality undervalued stocks. If you save a screener we even alert you when new companies match - so you never miss a potential opportunity.

    Next Steps

    Mixed messages on Idemitsu KosanLtd’s value and risks so far. If this has you thinking about your next move, review the underlying data yourself and decide where you stand after weighing the 4 key rewards and 2 important warning signs.

    Looking for more investment ideas beyond Idemitsu KosanLtd?

    If Idemitsu KosanLtd has sharpened your focus, do not stop here. Broadening your watchlist now helps you compare opportunities and build a stronger investing playbook.

    This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.