Investors are often guided by the idea of discovering 'the next big thing', even if that means buying 'story stocks' without any revenue, let alone profit. 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 Arista Networks (NYSE:ANET). While profit isn't the sole metric that should be considered when investing, it's worth recognising businesses that can consistently produce it.

View our latest analysis for Arista Networks

How Fast Is Arista Networks 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. That means EPS growth is considered a real positive by most successful long-term investors. Over the last three years, Arista Networks has grown EPS by 15% per year. That growth rate is fairly good, assuming the company can keep it up.

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. The good news is that Arista Networks is growing revenues, and EBIT margins improved by 2.7 percentage points to 34%, over the last year. Both of which are great metrics to check off for potential growth.

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.

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 Arista Networks.

Are Arista Networks Insiders Aligned With All Shareholders?

Since Arista Networks has a market capitalisation of US$40b, we wouldn't expect insiders to hold a large percentage of shares. But thanks to their investment in the company, it's pleasing to see that there are still incentives to align their actions with the shareholders. Indeed, they have a considerable amount of wealth invested in it, currently valued at US$9.1b. Coming in at 23% of the business, that holding gives insiders a lot of influence, and plenty of reason to generate value for shareholders. Very encouraging.

Should You Add Arista Networks To Your Watchlist?

One positive for Arista Networks is that it is growing EPS. That's nice to see. For those who are looking for a little more than this, the high level of insider ownership enhances our enthusiasm for this growth. The combination definitely favoured by investors so consider keeping the company on a watchlist. Still, you should learn about the 1 warning sign we've spotted with Arista Networks.

The beauty of investing is that you can invest in almost 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.

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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.