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. Unfortunately, these high risk investments often have little probability of ever paying off, and many investors pay a price to learn their lesson. A loss-making company is yet to prove itself with profit, and eventually the inflow of external capital may dry up.

In contrast to all that, many investors prefer to focus on companies like Armstrong World Industries (NYSE:AWI), which has not only revenues, but also profits. While profit isn't the sole metric that should be considered when investing, it's worth recognising businesses that can consistently produce it.

Check out our latest analysis for Armstrong World Industries

How Quickly Is Armstrong World Industries 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. Over the last three years, Armstrong World Industries has grown EPS by 15% per year. That growth rate is fairly good, assuming the company can keep it up.

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. Armstrong World Industries maintained stable EBIT margins over the last year, all while growing revenue 8.0% to US$1.4b. That's encouraging news for the company!

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.

Fortunately, we've got access to analyst forecasts of Armstrong World Industries' future profits. You can do your own forecasts without looking, or you can take a peek at what the professionals are predicting.

Are Armstrong World Industries Insiders Aligned With All Shareholders?

Owing to the size of Armstrong World Industries, 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. With a whopping US$77m 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.

Does Armstrong World Industries Deserve A Spot On Your Watchlist?

One important encouraging feature of Armstrong World Industries is that it is growing profits. To add an extra spark to the fire, significant insider ownership in the company is another highlight. That combination is very appealing. So yes, we do think the stock is worth keeping an eye on. However, before you get too excited we've discovered 1 warning sign for Armstrong World Industries that you should be aware of.

While opting for stocks without growing earnings and absent insider buying can yield results, for investors valuing these key metrics, here is a carefully selected list of companies in the US with promising growth potential and insider confidence.

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.