Mammoth Energy Services, Inc. (NASDAQ:TUSK) shares have had a horrible month, losing 26% after a relatively good period beforehand. The drop over the last 30 days has capped off a tough year for shareholders, with the share price down 21% in that time.

In spite of the heavy fall in price, there still wouldn't be many who think Mammoth Energy Services' price-to-sales (or "P/S") ratio of 0.9x is worth a mention when the median P/S in the United States' Energy Services industry is similar at about 1x. While this might not raise any eyebrows, if the P/S ratio is not justified investors could be missing out on a potential opportunity or ignoring looming disappointment.

How Mammoth Energy Services Has Been Performing

For example, consider that Mammoth Energy Services' financial performance has been poor lately as its revenue has been in decline. It might be that many expect the company to put the disappointing revenue performance behind them over the coming period, which has kept the P/S from falling. If you like the company, you'd at least be hoping this is the case so that you could potentially pick up some stock while it's not quite in favour.

We don't have analyst forecasts, but you can see how recent trends are setting up the company for the future by checking out our free report on Mammoth Energy Services' earnings, revenue and cash flow.

Is There Some Revenue Growth Forecasted For Mammoth Energy Services?

In order to justify its P/S ratio, Mammoth Energy Services would need to produce growth that's similar to the industry.

In reviewing the last year of financials, we were disheartened to see the company's revenues fell to the tune of 48%. As a result, revenue from three years ago have also fallen 27% overall. Therefore, it's fair to say the revenue growth recently has been undesirable for the company.

Comparing that to the industry, which is predicted to deliver 6.3% growth in the next 12 months, the company's downward momentum based on recent medium-term revenue results is a sobering picture.

In light of this, it's somewhat alarming that Mammoth Energy Services' P/S 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/S falls to levels more in line with the recent negative growth rates.

What We Can Learn From Mammoth Energy Services' P/S?

With its share price dropping off a cliff, the P/S for Mammoth Energy Services looks to be in line with the rest of the Energy Services industry. While the price-to-sales ratio shouldn't be the defining factor in whether you buy a stock or not, it's quite a capable barometer of revenue expectations.

We find it unexpected that Mammoth Energy Services trades at a P/S ratio that is comparable to the rest of the industry, despite experiencing declining revenues during the medium-term, while the industry as a whole is expected to grow. When we see revenue heading backwards in the context of growing industry forecasts, it'd make sense to expect a possible share price decline on the horizon, sending the moderate P/S lower. Unless the recent medium-term conditions improve markedly, investors will have a hard time accepting the share price as fair value.

The company's balance sheet is another key area for risk analysis. You can assess many of the main risks through our free balance sheet analysis for Mammoth Energy Services with six simple checks.

If companies with solid past earnings growth is up your alley, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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