If you want to compound wealth in the stock market, you can do so by buying an index fund. But in our experience, buying the right stocks can give your wealth a significant boost. For example, the Plexus Corp. (NASDAQ:PLXS) share price is up 88% in the last five years, slightly above the market return. It's also good to see a healthy gain of 31% in the last year.

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.

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. 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.

Plexus' earnings per share are down 2.7% per year, despite strong share price performance over five years.

By glancing at these numbers, we'd posit that the decline in earnings per share is not representative of how the business has changed over the years. Since the change in EPS doesn't seem to correlate with the change in share price, it's worth taking a look at other metrics.

On the other hand, Plexus' revenue is growing nicely, at a compound rate of 6.3% over the last five years. It's quite possible that management are prioritizing revenue growth over EPS growth at the moment.

The company's revenue and earnings (over time) are depicted in the image below (click to see the exact numbers).

This free interactive report on Plexus' balance sheet strength is a great place to start, if you want to investigate the stock further.

A Different Perspective

We're pleased to report that Plexus shareholders have received a total shareholder return of 31% over one year. That's better than the annualised return of 13% over half a decade, implying that the company is doing better recently. In the best case scenario, this may hint at some real business momentum, implying that now could be a great time to delve deeper. While it is well worth considering the different impacts that market conditions can have on the share price, there are other factors that are even more important. For instance, we've identified 1 warning sign for Plexus that you should be aware of.

But note: Plexus 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.