For many investors, the main point of stock picking is to generate higher returns than the overall market. But its virtually certain that sometimes you will buy stocks that fall short of the market average returns. We regret to report that long term Atlantica Sustainable Infrastructure plc (NASDAQ:AY) shareholders have had that experience, with the share price dropping 51% in three years, versus a market return of about 20%. And the ride hasn't got any smoother in recent times over the last year, with the price 34% lower in that time. Furthermore, it's down 12% in about a quarter. That's not much fun for holders.

Since shareholders are down over the longer term, lets look at the underlying fundamentals over the that time and see if they've been consistent with returns.

Check out our latest analysis for Atlantica Sustainable Infrastructure

In his essay The Superinvestors of Graham-and-Doddsville Warren Buffett described how share prices do not always rationally reflect the value of a business. One imperfect but simple way to consider how the market perception of a company has shifted is to compare the change in the earnings per share (EPS) with the share price movement.

Atlantica Sustainable Infrastructure became profitable within the last five years. That would generally be considered a positive, so we are surprised to see the share price is down. So it's worth looking at other metrics to try to understand the share price move.

We note that the dividend seems healthy enough, so that probably doesn't explain the share price drop. Atlantica Sustainable Infrastructure has maintained its top line over three years, so we doubt that has shareholders worried. So it might be worth looking at how revenue growth over time, in greater detail.

The image below shows how earnings and revenue have tracked over time (if you click on the image you can see greater detail).

We're pleased to report that the CEO is remunerated more modestly than most CEOs at similarly capitalized companies. It's always worth keeping an eye on CEO pay, but a more important question is whether the company will grow earnings throughout the years. So it makes a lot of sense to check out what analysts think Atlantica Sustainable Infrastructure will earn in the future (free profit forecasts).

What About Dividends?

When looking at investment returns, it is important to consider the difference between total shareholder return (TSR) and share price return. Whereas the share price return only reflects the change in the share price, the TSR includes the value of dividends (assuming they were reinvested) and the benefit of any discounted capital raising or spin-off. It's fair to say that the TSR gives a more complete picture for stocks that pay a dividend. In the case of Atlantica Sustainable Infrastructure, it has a TSR of -41% for the last 3 years. That exceeds its share price return that we previously mentioned. The dividends paid by the company have thusly boosted the total shareholder return.

A Different Perspective

Investors in Atlantica Sustainable Infrastructure had a tough year, with a total loss of 28% (including dividends), against a market gain of about 28%. Even the share prices of good stocks drop sometimes, but we want to see improvements in the fundamental metrics of a business, before getting too interested. Longer term investors wouldn't be so upset, since they would have made 5%, each year, over five years. It could be that the recent sell-off is an opportunity, so it may be worth checking the fundamental data for signs of a long term growth trend. I find it very interesting to look at share price over the long term as a proxy for business performance. But to truly gain insight, we need to consider other information, too. Even so, be aware that Atlantica Sustainable Infrastructure is showing 3 warning signs in our investment analysis , and 1 of those makes us a bit uncomfortable...

Of course, you might find a fantastic investment by looking elsewhere. So take a peek at this free list of companies we expect will grow earnings.

Please note, the market returns quoted in this article reflect the market weighted average returns of stocks that currently trade on American exchanges.

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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.