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 the reality is that when a company loses money each year, for long enough, its investors will usually take their share of those losses. Loss making companies can act like a sponge for capital - so investors should be cautious that they're not throwing good money after bad.

So if this idea of high risk and high reward doesn't suit, you might be more interested in profitable, growing companies, like ACI Worldwide (NASDAQ:ACIW). 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.

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How Quickly Is ACI Worldwide Increasing Earnings Per Share?

If a company can keep growing earnings per share (EPS) long enough, its share price should eventually follow. So it makes sense that experienced investors pay close attention to company EPS when undertaking investment research. Impressively, ACI Worldwide has grown EPS by 21% per year, compound, in the last three years. As a general rule, we'd say that if a company can keep up that sort of growth, shareholders will be beaming.

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. The music to the ears of ACI Worldwide shareholders is that EBIT margins have grown from 17% to 20% in the last 12 months and revenues are on an upwards trend as well. Both of which are great metrics to check off for potential growth.

The chart below shows how the company's bottom and top lines have progressed over time. Click on the chart to see the exact numbers.

View our latest analysis for ACI Worldwide

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 ACI Worldwide.

Are ACI Worldwide Insiders Aligned With All Shareholders?

Owing to the size of ACI Worldwide, we wouldn't expect insiders to hold a significant proportion of the company. But we do take comfort from the fact that they are investors in the company. With a whopping US$56m worth of shares as a group, insiders have plenty riding on the company's success. This should keep them focused on creating long term value for shareholders.

Is ACI Worldwide Worth Keeping An Eye On?

You can't deny that ACI Worldwide has grown its earnings per share at a very impressive rate. That's attractive. This EPS growth rate is something the company should be proud of, and so it's no surprise that insiders are holding on to a considerable chunk of shares. Fast growth and confident insiders should be enough to warrant further research, so it would seem that it's a good stock to follow. It is worth noting though that we have found 2 warning signs for ACI Worldwide that you need to take into consideration.

There's always the possibility of doing well buying stocks that are not growing earnings and do not have insiders buying shares. But for those who consider these important metrics, we encourage you to check out companies that do have those features. You can access a tailored list of companies which have demonstrated growth backed by significant insider holdings.

Please note the insider transactions discussed in this article refer to reportable transactions in the relevant jurisdiction.

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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.