Bruker Corporation (NASDAQ:BRKR) shareholders should be happy to see the share price up 13% in the last month. But that cannot eclipse the less-than-impressive returns over the last three years. After all, the share price is down 27% in the last three years, significantly under-performing the market.

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.

To paraphrase Benjamin Graham: Over the short term the market is a voting machine, but over the long term it's a weighing machine. 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 the unfortunate three years of share price decline, Bruker actually saw its earnings per share (EPS) improve by 4.1% per year. This is quite a puzzle, and suggests there might be something temporarily buoying the share price. Or else the company was over-hyped in the past, and so its growth has disappointed.

It's pretty reasonable to suspect the market was previously to bullish on the stock, and has since moderated expectations. But it's possible a look at other metrics will be enlightening.

With a rather small yield of just 0.3% we doubt that the stock's share price is based on its dividend. Revenue is actually up 11% over the three years, so the share price drop doesn't seem to hinge on revenue, either. This analysis is just perfunctory, but it might be worth researching Bruker more closely, as sometimes stocks fall unfairly. This could present an opportunity.

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

It's good to see that there was some significant insider buying in the last three months. That's a positive. That said, we think earnings and revenue growth trends are even more important factors to consider. This free report showing analyst forecasts should help you form a view on Bruker

A Different Perspective

While the broader market gained around 30% in the last year, Bruker shareholders lost 21% (even including dividends). 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 3%, 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. 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 example, we've discovered 2 warning signs for Bruker (1 can't be ignored!) that you should be aware of before investing here.

If you like to buy stocks alongside management, then you might just love this free list of companies. (Hint: most of them are flying under the radar).

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.