Investors are often guided by the idea of discovering 'the next big thing', even if that means buying 'story stocks' without any revenue, let alone 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.

If this kind of company isn't your style, you like companies that generate revenue, and even earn profits, then you may well be interested in F5 (NASDAQ:FFIV). 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.

View our latest analysis for F5

How Quickly Is F5 Increasing Earnings Per Share?

If you believe that markets are even vaguely efficient, then over the long term you'd expect a company's share price to follow its earnings per share (EPS) outcomes. That means EPS growth is considered a real positive by most successful long-term investors. F5 managed to grow EPS by 9.4% per year, over three years. That's a pretty good rate, if the company can sustain it.

Careful consideration of revenue growth and earnings before interest and taxation (EBIT) margins can help inform a view on the sustainability of the recent profit growth. F5 shareholders can take confidence from the fact that EBIT margins are up from 16% to 19%, and revenue is growing. Ticking those two boxes is a good sign of growth, in our book.

In the chart below, you can see how the company has grown earnings and revenue, over time. Click on the chart to see the exact numbers.

While we live in the present moment, there's little doubt that the future matters most in the investment decision process. So why not check this interactive chart depicting future EPS estimates, for F5?

Are F5 Insiders Aligned With All Shareholders?

Owing to the size of F5, we wouldn't expect insiders to hold a significant proportion of the company. But thanks to their investment in the company, it's pleasing to see that there are still incentives to align their actions with the shareholders. Given insiders own a significant chunk of shares, currently valued at US$68m, they have plenty of motivation to push the business to succeed. This should keep them focused on creating long term value for shareholders.

Should You Add F5 To Your Watchlist?

One important encouraging feature of F5 is that it is growing profits. If that's not enough on its own, there is also the rather notable levels of insider ownership. These two factors are a huge highlight for the company which should be a strong contender your watchlists. Now, you could try to make up your mind on F5 by focusing on just these factors, or you could also consider how its price-to-earnings ratio compares to other companies in its industry.

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 free list of them here.

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.