The excitement of investing in a company that can reverse its fortunes is a big draw for some speculators, so even companies that have no revenue, no profit, and a record of falling short, can manage to find investors. 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 are always racing against time to reach financial sustainability, so investors in these companies may be taking on more risk than they should.

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. Even if this company is fairly valued by the market, investors would agree that generating consistent profits will continue to provide Armstrong World Industries with the means to add long-term value to shareholders.

Check out our latest analysis for Armstrong World Industries

How Quickly Is Armstrong World Industries Increasing Earnings Per Share?

If a company can keep growing earnings per share (EPS) long enough, its share price should eventually follow. Therefore, there are plenty of investors who like to buy shares in companies that are growing EPS. Recognition must be given to the that Armstrong World Industries has grown EPS by 44% per year, over the last three years. Growth that fast may well be fleeting, but it should be more than enough to pique the interest of the wary stock pickers.

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. While we note Armstrong World Industries achieved similar EBIT margins to last year, revenue grew by a solid 6.3% to US$1.3b. That's encouraging news for the company!

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 Armstrong World Industries.

Are Armstrong World Industries Insiders Aligned With All Shareholders?

It should give investors a sense of security owning shares in a company if insiders also own shares, creating a close alignment their interests. Shareholders will be pleased by the fact that insiders own Armstrong World Industries shares worth a considerable sum. To be specific, they have US$49m worth of shares. This considerable investment should help drive long-term value in the business. Despite being just 1.1% of the company, the value of that investment is enough to show insiders have plenty riding on the venture.

Is Armstrong World Industries Worth Keeping An Eye On?

Armstrong World Industries' earnings per share growth have been climbing higher at an appreciable rate. This level of EPS growth does wonders for attracting investment, and the large insider investment in the company is just the cherry on top. The hope is, of course, that the strong growth marks a fundamental improvement in the business economics. So at the surface level, Armstrong World Industries is worth putting on your watchlist; after all, shareholders do well when the market underestimates fast growing companies. You still need to take note of risks, for example - Armstrong World Industries has 1 warning sign we think you should be aware of.

The beauty of investing is that you can invest in almost any company you want. But if you prefer to focus on stocks that have demonstrated insider buying, here is a list of companies with insider buying in the last three months.

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.