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 as Peter Lynch said in One Up On Wall Street, 'Long shots almost never pay off.' Loss making companies can act like a sponge for capital - so investors should be cautious that they're not throwing good money after bad.

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 Donaldson Company (NYSE:DCI). 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.

See our latest analysis for Donaldson Company

Donaldson Company's Earnings Per Share Are Growing

Generally, companies experiencing growth in earnings per share (EPS) should see similar trends in share price. So it makes sense that experienced investors pay close attention to company EPS when undertaking investment research. Over the last three years, Donaldson Company has grown EPS by 14% per year. That growth rate is fairly good, assuming the company can keep it up.

One way to double-check a company's growth is to look at how its revenue, and earnings before interest and tax (EBIT) margins are changing. Donaldson Company maintained stable EBIT margins over the last year, all while growing revenue 6.1% to US$3.6b. That's encouraging news for the company!

In the chart below, you can see how the company has grown earnings and revenue, over time. For finer detail, click on the image.

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

Are Donaldson Company Insiders Aligned With All Shareholders?

Owing to the size of Donaldson Company, 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. Indeed, they hold US$48m worth of its stock. This considerable investment should help drive long-term value in the business. Even though that's only about 0.6% of the company, it's enough money to indicate alignment between the leaders of the business and ordinary shareholders.

Does Donaldson Company Deserve A Spot On Your Watchlist?

One positive for Donaldson Company is that it is growing EPS. That's nice to see. 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. While we've looked at the quality of the earnings, we haven't yet done any work to value the stock. So if you like to buy cheap, you may want to check if Donaldson Company is trading on a high P/E or a low P/E, relative to its industry.

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.