It's only natural that many investors, especially those who are new to the game, prefer to buy shares in 'sexy' stocks with a good story, even if those businesses lose money. 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.

In contrast to all that, I prefer to spend time on companies like PTC (NASDAQ:PTC), which has not only revenues, but also profits. Even if the shares are fully valued today, most capitalists would recognize its profits as the demonstration of steady value generation. In comparison, loss making companies act like a sponge for capital - but unlike such a sponge they do not always produce something when squeezed.

Check out our latest analysis for PTC

How Fast Is PTC Growing Its Earnings Per Share?

In business, though not in life, profits are a key measure of success; and share prices tend to reflect earnings per share (EPS). So like a ray of sunshine through a gap in the clouds, improving EPS is considered a good sign. You can imagine, then, that it almost knocked my socks off when I realized that PTC grew its EPS from US$1.13 to US$4.05, in one short year. When you see earnings grow that quickly, it often means good things ahead for the company. Could this be a sign that the business has reached an inflection point?

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. PTC shareholders can take confidence from the fact that EBIT margins are up from 17% to 22%, and revenue is growing. That's great to see, on both counts.

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.

You don't drive with your eyes on the rear-view mirror, so you might be more interested in this free report showing analyst forecasts for PTC's future profits.

Are PTC Insiders Aligned With All Shareholders?

Since PTC has a market capitalization of US$14b, we wouldn't expect insiders to hold a large percentage of shares. But we do take comfort from the fact that they are investors in the company. Notably, they have an enormous stake in the company, worth US$141m. I would find that kind of skin in the game quite encouraging, if I owned shares, since it would ensure that the leaders of the company would also experience my success, or failure, with the stock.

Does PTC Deserve A Spot On Your Watchlist?

PTC's earnings per share growth have been levitating higher, like a mountain goat scaling the Alps. That EPS growth certainly has my attention, and the large insider ownership only serves to further stoke my interest. At times fast EPS growth is a sign the business has reached an inflection point; and I do like those. So yes, on this short analysis I do think it's worth considering PTC for a spot on your watchlist. However, before you get too excited we've discovered 2 warning signs for PTC (1 can't be ignored!) that you should be aware of.

Although PTC certainly looks good to me, I would like it more if insiders were buying up shares. If you like to see insider buying, too, then this free list of growing companies that insiders are buying, could be exactly what you're looking for.

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.