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Investors in Energy Recovery (NASDAQ:ERII) have seen decent returns of 37% over the past five years

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While Energy Recovery, Inc. (NASDAQ:ERII) shareholders are probably generally happy, the stock hasn't had particularly good run recently, with the share price falling 26% in the last quarter. But at least the stock is up over the last five years. However we are not very impressed because the share price is only up 37%, less than the market return of 92%.

So let's investigate and see if the longer term performance of the company has been in line with the underlying business' progress.

Check out our latest analysis for Energy Recovery

To paraphrase Benjamin Graham: Over the short term the market is a voting machine, but over the long term it's a weighing machine. 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.

During five years of share price growth, Energy Recovery achieved compound earnings per share (EPS) growth of 5.5% per year. So the EPS growth rate is rather close to the annualized share price gain of 7% per year. This indicates that investor sentiment towards the company has not changed a great deal. Rather, the share price has approximately tracked EPS growth.

You can see how EPS has changed over time in the image below (click on the chart to see the exact values).

earnings-per-share-growth
NasdaqGS:ERII Earnings Per Share Growth February 5th 2025

We like that insiders have been buying shares in the last twelve months. Even so, future earnings will be far more important to whether current shareholders make money. Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here..

A Different Perspective

While the broader market gained around 24% in the last year, Energy Recovery shareholders lost 1.2%. However, keep in mind that even the best stocks will sometimes underperform the market over a twelve month period. On the bright side, long term shareholders have made money, with a gain of 7% per year over half a decade. 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. To that end, you should be aware of the 1 warning sign we've spotted with Energy Recovery .

Energy Recovery is not the only stock that insiders are buying. For those who like to find lesser know companies this free list of growing companies with recent insider purchasing, could be just the ticket.