VirTra, Inc. (NASDAQ:VTSI) shareholders would be excited to see that the share price has had a great month, posting a 28% gain and recovering from prior weakness. Looking back a bit further, it's encouraging to see the stock is up 30% in the last year.

Although its price has surged higher, VirTra's price-to-earnings (or "P/E") ratio of 15.7x might still make it look like a buy right now compared to the market in the United States, where around half of the companies have P/E ratios above 20x and even P/E's above 36x are quite common. However, the P/E might be low for a reason and it requires further investigation to determine if it's justified.

VirTra hasn't been tracking well recently as its declining earnings compare poorly to other companies, which have seen some growth on average. It seems that many are expecting the dour earnings performance to persist, which has repressed the P/E. If you still 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.

How Is VirTra's Growth Trending?

There's an inherent assumption that a company should underperform the market for P/E ratios like VirTra's to be considered reasonable.

Retrospectively, the last year delivered a frustrating 18% decrease to the company's bottom line. Regardless, EPS has managed to lift by a handy 16% in aggregate from three years ago, thanks to the earlier period of growth. So we can start by confirming that the company has generally done a good job of growing earnings over that time, even though it had some hiccups along the way.

Looking ahead now, EPS is anticipated to slump, contracting by 22% during the coming year according to the dual analysts following the company. That's not great when the rest of the market is expected to grow by 15%.

In light of this, it's understandable that VirTra's P/E would sit below the majority of other companies. However, shrinking earnings are unlikely to lead to a stable P/E over the longer term. There's potential for the P/E to fall to even lower levels if the company doesn't improve its profitability.

What We Can Learn From VirTra's P/E?

Despite VirTra's shares building up a head of steam, its P/E still lags 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.

As we suspected, our examination of VirTra'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.

Before you take the next step, you should know about the 3 warning signs for VirTra (1 is significant!) that we have uncovered.

Of course, you might also be able to find a better stock than VirTra. So you may wish to see this free collection of other companies that have reasonable P/E ratios and have grown earnings strongly.

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