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The last three months have been tough on Comfort Systems USA, Inc. (NYSE:FIX) shareholders, who have seen the share price decline a rather worrying 35%. But over five years returns have been remarkably great. To be precise, the stock price is 892% higher than it was five years ago, a wonderful performance by any measure. So we don't think the recent decline in the share price means its story is a sad one. Of course what matters most is whether the business can improve itself sustainably, thus justifying a higher price. Anyone who held for that rewarding ride would probably be keen to talk about it.

With that in mind, it's worth seeing if the company's underlying fundamentals have been the driver of long term performance, or if there are some discrepancies.

While the efficient markets hypothesis continues to be taught by some, it has been proven that markets are over-reactive dynamic systems, and investors are not always rational. By comparing earnings per share (EPS) and share price changes over time, we can get a feel for how investor attitudes to a company have morphed over time.

Over half a decade, Comfort Systems USA managed to grow its earnings per share at 37% a year. This EPS growth is lower than the 58% average annual increase in the share price. So it's fair to assume the market has a higher opinion of the business than it did five years ago. That's not necessarily surprising considering the five-year track record of earnings growth.

You can see below how EPS has changed over time (discover the exact values by clicking on the image).

We're pleased to report that the CEO is remunerated more modestly than most CEOs at similarly capitalized companies. But while CEO remuneration is always worth checking, the really important question is whether the company can grow earnings going forward. Dive deeper into the earnings by checking this interactive graph of Comfort Systems USA's earnings, revenue and cash flow.

What About Dividends?

As well as measuring the share price return, investors should also consider the total shareholder return (TSR). The TSR incorporates the value of any spin-offs or discounted capital raisings, along with any dividends, based on the assumption that the dividends are reinvested. So for companies that pay a generous dividend, the TSR is often a lot higher than the share price return. We note that for Comfort Systems USA the TSR over the last 5 years was 921%, which is better than the share price return mentioned above. The dividends paid by the company have thusly boosted the total shareholder return.

A Different Perspective

It's nice to see that Comfort Systems USA shareholders have received a total shareholder return of 16% over the last year. Of course, that includes the dividend. However, the TSR over five years, coming in at 59% per year, is even more impressive. The pessimistic view would be that be that the stock has its best days behind it, but on the other hand the price might simply be moderating while the business itself continues to execute. It's always interesting to track share price performance over the longer term. But to understand Comfort Systems USA better, we need to consider many other factors. To that end, you should be aware of the 1 warning sign we've spotted with Comfort Systems USA .

But note: Comfort Systems USA may not be the best stock to buy. So take a peek at this free list of interesting companies with past earnings growth (and further growth forecast).

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.