Long term investing works well, but it doesn't always work for each individual stock. We really hate to see fellow investors lose their hard-earned money. Spare a thought for those who held Mongolia Energy Corporation Limited (HKG:276) for five whole years - as the share price tanked 84%. Shareholders have had an even rougher run lately, with the share price down 13% in the last 90 days.

We really hope anyone holding through that price crash has a diversified portfolio. Even when you lose money, you don't have to lose the lesson.

Check out our latest analysis for Mongolia Energy

Mongolia Energy isn't currently profitable, so most analysts would look to revenue growth to get an idea of how fast the underlying business is growing. When a company doesn't make profits, we'd generally expect to see good revenue growth. That's because it's hard to be confident a company will be sustainable if revenue growth is negligible, and it never makes a profit.

Over five years, Mongolia Energy grew its revenue at 58% per year. That's well above most other pre-profit companies. So it's not at all clear to us why the share price sunk 31% throughout that time. It could be that the stock was over-hyped before. While there might be an opportunity here, you'd want to take a close look at the balance sheet strength.

You can see below how earnings and revenue have changed over time (discover the exact values by clicking on the image).

This free interactive report on Mongolia Energy's balance sheet strength is a great place to start, if you want to investigate the stock further.

A Different Perspective

Mongolia Energy shareholders are down 13% for the year, but the market itself is up 5.5%. 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. However, the loss over the last year isn't as bad as the 31% per annum loss investors have suffered over the last half decade. We would want clear information suggesting the company will grow, before taking the view that the share price will stabilize. Shareholders might want to examine this detailed historical graph of past earnings, revenue and cash flow.

For those who like to find winning investments this free list of growing companies with recent insider purchasing, could be just the ticket.

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

We aim to bring you long-term focused research analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material.

If you spot an error that warrants correction, please contact the editor at editorial-team@simplywallst.com. This article by Simply Wall St is general in nature. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. Simply Wall St has no position in the stocks mentioned. Thank you for reading.