With a price-to-earnings (or "P/E") ratio of 11.7x Otter Tail Corporation (NASDAQ:OTTR) may be sending bullish signals at the moment, given that almost half of all companies in the United States have P/E ratios greater than 17x and even P/E's higher than 32x are not unusual. However, the P/E might be low for a reason and it requires further investigation to determine if it's justified.

With its earnings growth in positive territory compared to the declining earnings of most other companies, Otter Tail has been doing quite well of late. It might be that many expect the strong earnings performance to degrade substantially, possibly more than the market, which has repressed the P/E. 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 out of favour.

Is There Any Growth For Otter Tail?

The only time you'd be truly comfortable seeing a P/E as low as Otter Tail's is when the company's growth is on track to lag the market.

If we review the last year of earnings growth, the company posted a worthy increase of 3.3%. This was backed up an excellent period prior to see EPS up by 199% in total over the last three years. Therefore, it's fair to say the earnings growth recently has been superb for the company.

Turning to the outlook, the next three years should bring diminished returns, with earnings decreasing 18% per year as estimated by the three analysts watching the company. Meanwhile, the broader market is forecast to expand by 10% per year, which paints a poor picture.

With this information, we are not surprised that Otter Tail is trading at a P/E lower than the market. Nonetheless, there's no guarantee the P/E has reached a floor yet with earnings going in reverse. Even just maintaining these prices could be difficult to achieve as the weak outlook is weighing down the shares.

What We Can Learn From Otter Tail's P/E?

Using the price-to-earnings ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

As we suspected, our examination of Otter Tail's analyst forecasts revealed that its outlook for shrinking earnings is contributing to its low P/E. At this stage investors feel the potential for an improvement in earnings isn't great enough to justify a higher P/E ratio. It's hard to see the share price rising strongly in the near future under these circumstances.

It is also worth noting that we have found 2 warning signs for Otter Tail (1 can't be ignored!) that you need to take into consideration.

It's important to make sure you look for a great company, not just the first idea you come across. So take a peek at this free list of interesting companies with strong recent earnings growth (and a low P/E).

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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.