Some have more dollars than sense, they say, so even companies that have no revenue, no profit, and a record of falling short, can easily find investors. But as Peter Lynch said in One Up On Wall Street, 'Long shots almost never pay off.'

In the age of tech-stock blue-sky investing, my choice may seem old fashioned; I still prefer profitable companies like SDI Group (LON:SDI). While that doesn't make the shares worth buying at any price, you can't deny that successful capitalism requires profit, eventually. Conversely, a loss-making company is yet to prove itself with profit, and eventually the sweet milk of external capital may run sour.

See our latest analysis for SDI Group

SDI Group's Earnings Per Share Are Growing.

The market is a voting machine in the short term, but a weighing machine in the long term, so share price follows earnings per share (EPS) eventually. Therefore, there are plenty of investors who like to buy shares in companies that are growing EPS. I, for one, am blown away by the fact that SDI Group has grown EPS by 48% per year, over the last three years. While that sort of growth rate isn't sustainable for long, it certainly catches my attention; like a crow with a sparkly stone.

I like to see top-line growth as an indication that growth is sustainable, and I look for a high earnings before interest and taxation (EBIT) margin to point to a competitive moat (though some companies with low margins also have moats). SDI Group shareholders can take confidence from the fact that EBIT margins are up from 17% to 19%, and revenue is growing. Ticking those two boxes is a good sign of growth, in my book.

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. earnings-and-revenue-history

While we live in the present moment at all times, there's no doubt in my mind that the future matters more than the past. So why not check this interactive chart depicting future EPS estimates, for SDI Group?



Are SDI Group Insiders Aligned With All Shareholders?

I always like to check up on CEO compensation, because I think that reasonable pay levels, around or below the median, can be a sign that shareholder interests are well considered. For companies with market capitalizations between UK£81m and UK£323m, like SDI Group, the median CEO pay is around UK£536k.

The CEO of SDI Group only received UK£206k in total compensation for the year ending . That looks like modest pay to me, and may hint at a certain respect for the interests of shareholders. CEO compensation is hardly the most important aspect of a company to consider, but when its reasonable that does give me a little more confidence that leadership are looking out for shareholder interests. It can also be a sign of good governance, more generally.

Is SDI Group Worth Keeping An Eye On?

SDI Group's earnings per share have taken off like a rocket aimed right at the moon. Such fast EPS growth makes me wonder if the business has hit an inflection point (and I mean the good kind.) Meanwhile, the very reasonable CEO pay reassures me a little, since it points to an absence profligacy. While I couldn't be sure without a deeper dive, it does seem that SDI Group has the hallmarks of a quality business; and that would make it well worth watching. However, before you get too excited we've discovered 1 warning sign for SDI Group that you should be aware of.

You can invest in 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.

Have feedback on this article? Concerned about the content?Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.

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.