New Gold Inc. (TSE:NGD) shareholders might be concerned after seeing the share price drop 20% in the last week. But that doesn't undermine the fantastic longer term performance (measured over five years). In that time, the share price has soared some 326% higher! So it might be that some shareholders are taking profits after good performance. Of course what matters most is whether the business can improve itself sustainably, thus justifying a higher price.

In light of the stock dropping 20% in the past week, we want to investigate the longer term story, and see if fundamentals have been the driver of the company's positive five-year return.

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In his essay The Superinvestors of Graham-and-Doddsville Warren Buffett described how share prices do not always rationally reflect the value of a business. One imperfect but simple way to consider how the market perception of a company has shifted is to compare the change in the earnings per share (EPS) with the share price movement.

During the five years of share price growth, New Gold 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.

The image below shows how EPS has tracked over time (if you click on the image you can see greater detail).

We like that insiders have been buying shares in the last twelve months. Having said that, most people consider earnings and revenue growth trends to be a more meaningful guide to the business. It might be well worthwhile taking a look at our free report on New Gold's earnings, revenue and cash flow .

A Different Perspective

It's nice to see that New Gold shareholders have received a total shareholder return of 78% over the last year. Since the one-year TSR is better than the five-year TSR (the latter coming in at 34% per year), it would seem that the stock's performance has improved in recent times. Given the share price momentum remains strong, it might be worth taking a closer look at the stock, lest you miss an opportunity. While it is well worth considering the different impacts that market conditions can have on the share price, there are other factors that are even more important. Even so, be aware that New Gold is showing 1 warning sign in our investment analysis , you should know about...

There are plenty of other companies that have insiders buying up shares. You probably do not want to miss this free list of undervalued small cap companies that insiders are buying.

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

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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.