It's common for many investors, especially those who are inexperienced, to buy shares in companies with a good story even if these companies are loss-making. 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.

So if this idea of high risk and high reward doesn't suit, you might be more interested in profitable, growing companies, like UnitedHealth Group (NYSE:UNH). While this doesn't necessarily speak to whether it's undervalued, the profitability of the business is enough to warrant some appreciation - especially if its growing.

See our latest analysis for UnitedHealth Group

How Fast Is UnitedHealth Group Growing?

The market is a voting machine in the short term, but a weighing machine in the long term, so you'd expect share price to follow earnings per share (EPS) outcomes eventually. So it makes sense that experienced investors pay close attention to company EPS when undertaking investment research. We can see that in the last three years UnitedHealth Group grew its EPS by 14% per year. That's a pretty good rate, if the company can sustain it.

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. Not all of UnitedHealth Group's revenue this year is revenue from operations, so keep in mind the revenue and margin numbers used in this article might not be the best representation of the underlying business. EBIT margins for UnitedHealth Group remained fairly unchanged over the last year, however the company should be pleased to report its revenue growth for the period of 13% to US$324b. That's encouraging news for the company!

The chart below shows how the company's bottom and top lines have progressed 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 UnitedHealth Group.

Are UnitedHealth Group Insiders Aligned With All Shareholders?

Owing to the size of UnitedHealth Group, we wouldn't expect insiders to hold a significant proportion of the company. But we are reassured by the fact they have invested in the company. Notably, they have an enviable stake in the company, worth US$1.5b. We note that this amounts to 0.3% of the company, which may be small owing to the sheer size of UnitedHealth Group but it's still worth mentioning. So despite their percentage holding being low, company management still have plenty of reasons to deliver the best outcomes for investors.

Should You Add UnitedHealth Group To Your Watchlist?

One important encouraging feature of UnitedHealth Group is that it is growing profits. If that's not enough on its own, there is also the rather notable levels of insider ownership. That combination is very appealing. So yes, we do think the stock is worth keeping an eye on. It is worth noting though that we have found 1 warning sign for UnitedHealth Group that you need to take into consideration.

There's always the possibility of doing well buying stocks that are not growing earnings and do not have insiders buying shares. But for those who consider these important metrics, we encourage you to check out companies that do have those features. You can access a free list of them here.

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.