Cosmo Bio Company,Limited (TSE:3386) Stock Rockets 26% As Investors Are Less Pessimistic Than Expected

Simply Wall St

Cosmo Bio Company,Limited (TSE:3386) shares have had a really impressive month, gaining 26% after a shaky period beforehand. Looking further back, the 20% rise over the last twelve months isn't too bad notwithstanding the strength over the last 30 days.

Following the firm bounce in price, Cosmo Bio CompanyLimited may be sending very bearish signals at the moment with a price-to-earnings (or "P/E") ratio of 32.6x, since almost half of all companies in Japan have P/E ratios under 14x and even P/E's lower than 10x are not unusual. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the highly elevated P/E.

For example, consider that Cosmo Bio CompanyLimited's financial performance has been poor lately as its earnings have been in decline. One possibility is that the P/E is high because investors think the company will still do enough to outperform the broader market in the near future. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

See our latest analysis for Cosmo Bio CompanyLimited

TSE:3386 Price to Earnings Ratio vs Industry December 4th 2025
Want the full picture on earnings, revenue and cash flow for the company? Then our free report on Cosmo Bio CompanyLimited will help you shine a light on its historical performance.

What Are Growth Metrics Telling Us About The High P/E?

Cosmo Bio CompanyLimited's P/E ratio would be typical for a company that's expected to deliver very strong growth, and importantly, perform much better than the market.

Taking a look back first, the company's earnings per share growth last year wasn't something to get excited about as it posted a disappointing decline of 32%. The last three years don't look nice either as the company has shrunk EPS by 57% in aggregate. Therefore, it's fair to say the earnings growth recently has been undesirable for the company.

Comparing that to the market, which is predicted to deliver 9.2% growth in the next 12 months, the company's downward momentum based on recent medium-term earnings results is a sobering picture.

With this information, we find it concerning that Cosmo Bio CompanyLimited is trading at a P/E higher than the market. Apparently many investors in the company are way more bullish than recent times would indicate and aren't willing to let go of their stock at any price. Only the boldest would assume these prices are sustainable as a continuation of recent earnings trends is likely to weigh heavily on the share price eventually.

The Final Word

Cosmo Bio CompanyLimited's P/E is flying high just like its stock has during the last month. It's argued the price-to-earnings ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.

Our examination of Cosmo Bio CompanyLimited revealed its shrinking earnings over the medium-term aren't impacting its high P/E anywhere near as much as we would have predicted, given the market is set to grow. When we see earnings heading backwards and underperforming the market forecasts, we suspect the share price is at risk of declining, sending the high P/E lower. If recent medium-term earnings trends continue, it will place shareholders' investments at significant risk and potential investors in danger of paying an excessive premium.

Plus, you should also learn about these 5 warning signs we've spotted with Cosmo Bio CompanyLimited (including 2 which can't be ignored).

If these risks are making you reconsider your opinion on Cosmo Bio CompanyLimited, explore our interactive list of high quality stocks to get an idea of what else is out there.

Valuation is complex, but we're here to simplify it.

Discover if Cosmo Bio CompanyLimited might be undervalued or overvalued with our detailed analysis, featuring fair value estimates, potential risks, dividends, insider trades, and its financial condition.

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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.