Planet Image International Limited (NASDAQ:YIBO) shares have had a really impressive month, gaining 26% after a shaky period beforehand. Longer-term shareholders would be thankful for the recovery in the share price since it's now virtually flat for the year after the recent bounce.

Even after such a large jump in price, you could still be forgiven for feeling indifferent about Planet Image International's P/E ratio of 16.2x, since the median price-to-earnings (or "P/E") ratio in the United States is also close to 18x. Although, it's not wise to simply ignore the P/E without explanation as investors may be disregarding a distinct opportunity or a costly mistake.

Planet Image International has been doing a decent job lately as it's been growing earnings at a reasonable pace. One possibility is that the P/E is moderate because investors think this good earnings growth might only be parallel to the broader market in the near future. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's not quite in favour.

How Is Planet Image International's Growth Trending?

Planet Image International's P/E ratio would be typical for a company that's only expected to deliver moderate growth, and importantly, perform in line with the market.

If we review the last year of earnings growth, the company posted a worthy increase of 7.4%. However, this wasn't enough as the latest three year period has seen an unpleasant 99% overall drop in EPS. 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 15% growth in the next 12 months, the company's downward momentum based on recent medium-term earnings results is a sobering picture.

In light of this, it's somewhat alarming that Planet Image International's P/E sits in line with the majority of other companies. Apparently many investors in the company are way less bearish than recent times would indicate and aren't willing to let go of their stock right now. There's a good chance existing shareholders are setting themselves up for future disappointment if the P/E falls to levels more in line with the recent negative growth rates.

The Final Word

Planet Image International appears to be back in favour with a solid price jump getting its P/E back in line with most other companies. We'd say the price-to-earnings ratio's power isn't primarily as a valuation instrument but rather to gauge current investor sentiment and future expectations.

We've established that Planet Image International currently trades on a higher than expected P/E since its recent earnings have been in decline over the medium-term. Right now we are uncomfortable with the P/E as this earnings performance is unlikely to support a more positive sentiment for long. Unless the recent medium-term conditions improve, it's challenging to accept these prices as being reasonable.

Before you take the next step, you should know about the 1 warning sign for Planet Image International that we have uncovered.

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

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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.