The last three months have been tough on Natural Gas Services Group, Inc. (NYSE:NGS) shareholders, who have seen the share price decline a rather worrying 32%. But that doesn't change the fact that the returns over the last half decade have been spectacular. To be precise, the stock price is 306% higher than it was five years ago, a wonderful performance by any measure. So we don't think the recent decline in the share price means its story is a sad one. But the real question is whether the business fundamentals can improve over the long term.

Although Natural Gas Services Group has shed US$50m from its market cap this week, let's take a look at its longer term fundamental trends and see if they've driven returns.

To quote Buffett, 'Ships will sail around the world but the Flat Earth Society will flourish. There will continue to be wide discrepancies between price and value in the marketplace...' One way to examine how market sentiment has changed over time is to look at the interaction between a company's share price and its earnings per share (EPS).

During the five years of share price growth, Natural Gas Services Group moved from a loss to profitability. Sometimes, the start of profitability is a major inflection point that can signal fast earnings growth to come, which in turn justifies very strong share price gains.

You can see below how EPS has changed over time (discover the exact values by clicking on the image).

We're pleased to report that the CEO is remunerated more modestly than most CEOs at similarly capitalized companies. But while CEO remuneration is always worth checking, the really important question is whether the company can grow earnings going forward. .

A Different Perspective

While the broader market lost about 2.0% in the twelve months, Natural Gas Services Group shareholders did even worse, losing 23%. However, it could simply be that the share price has been impacted by broader market jitters. It might be worth keeping an eye on the fundamentals, in case there's a good opportunity. On the bright side, long term shareholders have made money, with a gain of 32% per year over half a decade. It could be that the recent sell-off is an opportunity, so it may be worth checking the fundamental data for signs of a long term growth trend. It's always interesting to track share price performance over the longer term. But to understand Natural Gas Services Group better, we need to consider many other factors.

But note: Natural Gas Services Group may not be the best stock to buy. So take a peek at this free list of interesting companies with past earnings growth (and further growth forecast).

Please note, the market returns quoted in this article reflect the market weighted average returns of stocks that currently trade on American exchanges.

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.