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 as Warren Buffett has mused, 'If you've been playing poker for half an hour and you still don't know who the patsy is, you're the patsy.' When they buy such story stocks, investors are all too often the patsy.

In the age of tech-stock blue-sky investing, my choice may seem old fashioned; I still prefer profitable companies like Amphastar Pharmaceuticals (NASDAQ:AMPH). While that doesn't make the shares worth buying at any price, you can't deny that successful capitalism requires profit, eventually. Loss-making companies are always racing against time to reach financial sustainability, but time is often a friend of the profitable company, especially if it is growing.

View our latest analysis for Amphastar Pharmaceuticals

How Quickly Is Amphastar Pharmaceuticals Increasing Earnings Per Share?

If a company can keep growing earnings per share (EPS) long enough, its share price will eventually follow. It's no surprise, then, that I like to invest in companies with EPS growth. We can see that in the last three years Amphastar Pharmaceuticals grew its EPS by 12% per year. That's a good rate of growth, if it can be sustained.

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. Amphastar Pharmaceuticals shareholders can take confidence from the fact that EBIT margins are up from 2.0% to 8.4%, and revenue is growing. Ticking those two boxes is a good sign of growth, in my book.

In the chart below, you can see how the company has grown earnings, and revenue, over time. Click on the chart to see the exact numbers.

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

Are Amphastar Pharmaceuticals Insiders Aligned With All Shareholders?

I like company leaders to have some skin in the game, so to speak, because it increases alignment of incentives between the people running the business, and its true owners. So it is good to see that Amphastar Pharmaceuticals insiders have a significant amount of capital invested in the stock. Given insiders own a small fortune of shares, currently valued at US$79m, they have plenty of motivation to push the business to succeed. At 8.6% of the company, the co-investment by insiders gives me confidence that management will make long-term focussed decisions.

Is Amphastar Pharmaceuticals Worth Keeping An Eye On?

One positive for Amphastar Pharmaceuticals is that it is growing EPS. That's nice to see. If that's not enough on its own, there is also the rather notable levels of insider ownership. The combination sparks joy for me, so I'd consider keeping the company on a watchlist. We should say that we've discovered 1 warning sign for Amphastar Pharmaceuticals that you should be aware of before investing here.

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.

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.

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