The most you can lose on any stock (assuming you don't use leverage) is 100% of your money. But on the bright side, if you buy shares in a high quality company at the right price, you can gain well over 100%. For instance, the price of Casella Waste Systems, Inc. (NASDAQ:CWST) stock is up an impressive 143% over the last five years. The last week saw the share price soften some 1.8%.

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 markets are a powerful pricing mechanism, share prices reflect investor sentiment, not just underlying business performance. One way to examine how market sentiment has changed over time is to look at the interaction between a company's share price and its earnings per share (EPS).

During five years of share price growth, Casella Waste Systems achieved compound earnings per share (EPS) growth of 9.1% per year. This EPS growth is lower than the 19% average annual increase in the share price. This suggests that market participants hold the company in higher regard, these days. And that's hardly shocking given the track record of growth. This favorable sentiment is reflected in its (fairly optimistic) P/E ratio of 321.08.

The image below shows how EPS has 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. This free interactive report on Casella Waste Systems' earnings, revenue and cash flow is a great place to start, if you want to investigate the stock further.

A Different Perspective

Casella Waste Systems shareholders gained a total return of 13% during the year. But that was short of the market average. If we look back over five years, the returns are even better, coming in at 19% per year for five years. It may well be that this is a business worth popping on the watching, given the continuing positive reception, over time, from the market. It's always interesting to track share price performance over the longer term. But to understand Casella Waste Systems better, we need to consider many other factors. Take risks, for example - Casella Waste Systems has 3 warning signs (and 1 which is significant) we think you should know about.

For those who like to find winning investments this free list of undervalued companies with recent insider purchasing, could be just the ticket.

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.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com