For beginners, it can seem like a good idea (and an exciting prospect) to buy a company that tells a good story to investors, even if it currently lacks a track record of revenue and profit. But as Peter Lynch said in One Up On Wall Street, 'Long shots almost never pay off.' Loss-making companies are always racing against time to reach financial sustainability, so investors in these companies may be taking on more risk than they should.

Despite being in the age of tech-stock blue-sky investing, many investors still adopt a more traditional strategy; buying shares in profitable companies like Petershill Partners (LON:PHLL). Now this is not to say that the company presents the best investment opportunity around, but profitability is a key component to success in business.

Check out our latest analysis for Petershill Partners

Petershill Partners' Improving Profits

Even with very modest growth rates, a company will usually do well if it improves earnings per share (EPS) year after year. So EPS growth can certainly encourage an investor to take note of a stock. It's an outstanding feat for Petershill Partners to have grown EPS from US$0.016 to US$0.32 in just one year. When you see earnings grow that quickly, it often means good things ahead for the company. Could this be a sign that the business has reached an inflection point?

It's often helpful to take a look at earnings before interest and tax (EBIT) margins, as well as revenue growth, to get another take on the quality of the company's growth. Our analysis has highlighted that Petershill Partners' revenue from operations did not account for all of their revenue in the previous 12 months, so our analysis of its margins might not accurately reflect the underlying business. The music to the ears of Petershill Partners shareholders is that EBIT margins have grown from 80% to 94% in the last 12 months and revenues are on an upwards trend as well. That's great to see, on both counts.

In the chart below, you can see how the company has grown earnings and revenue, over time. To see the actual numbers, click on the chart.

Of course the knack is to find stocks that have their best days in the future, not in the past. You could base your opinion on past performance, of course, but you may also want to check this interactive graph of professional analyst EPS forecasts for Petershill Partners.

Are Petershill Partners Insiders Aligned With All Shareholders?

It's said that there's no smoke without fire. For investors, insider buying is often the smoke that indicates which stocks could set the market alight. That's because insider buying often indicates that those closest to the company have confidence that the share price will perform well. Of course, we can never be sure what insiders are thinking, we can only judge their actions.