Investing in stocks inevitably means buying into some companies that perform poorly. Long term NagaCorp Ltd. (HKG:3918) shareholders know that all too well, since the share price is down considerably over three years. Sadly for them, the share price is down 63% in that time. And more recent buyers are having a tough time too, with a drop of 27% in the last year. The falls have accelerated recently, with the share price down 12% in the last three months.

On a more encouraging note the company has added HK$840m to its market cap in just the last 7 days, so let's see if we can determine what's driven the three-year loss for shareholders.

See our latest analysis for NagaCorp

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 flawed but reasonable way to assess how sentiment around a company has changed is to compare the earnings per share (EPS) with the share price.

During five years of share price growth, NagaCorp moved from a loss to profitability. We would usually expect to see the share price rise as a result. So it's worth looking at other metrics to try to understand the share price move.

We think that the revenue decline over three years, at a rate of 44% per year, probably had some shareholders looking to sell. After all, if revenue keeps shrinking, it may be difficult to find earnings growth in the future.

You can see how earnings and revenue have changed over time in the image below (click on the chart to see the exact values).

We like that insiders have been buying shares in the last twelve months. Even so, future earnings will be far more important to whether current shareholders make money. If you are thinking of buying or selling NagaCorp stock, you should check out this free report showing analyst profit forecasts.

A Different Perspective

While the broader market gained around 3.1% in the last year, NagaCorp shareholders lost 27%. Even the share prices of good stocks drop sometimes, but we want to see improvements in the fundamental metrics of a business, before getting too interested. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 8% over the last half decade. We realise that Baron Rothschild has said investors should "buy when there is blood on the streets", but we caution that investors should first be sure they are buying a high quality business. Investors who like to make money usually check up on insider purchases, such as the price paid, and total amount bought. You can find out about the insider purchases of NagaCorp by clicking this link.

There are plenty of other companies that have insiders buying up shares. You probably do not want to miss this free list of growing 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 Hong Kong 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.