While not a mind-blowing move, it is good to see that the Illumina, Inc. (NASDAQ:ILMN) share price has gained 23% in the last three months. But that doesn't change the fact that the returns over the last three years have been disappointing. In that time, the share price dropped 66%. Some might say the recent bounce is to be expected after such a bad drop. After all, could be that the fall was overdone.

It's worthwhile assessing if the company's economics have been moving in lockstep with these underwhelming shareholder returns, or if there is some disparity between the two. So let's do just that.

Check out our latest analysis for Illumina

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. 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).

Illumina has made a profit in the past. However, it made a loss in the last twelve months, suggesting profit may be an unreliable metric at this stage. Other metrics might give us a better handle on how its value is changing over time.

The company has kept revenue pretty healthy over the last three years, so we doubt that explains the falling share price. There doesn't seem to be any clear correlation between the fundamental business metrics and the share price. That could mean that the stock was previously overrated, or it could spell opportunity now.

You can see how earnings and revenue have changed over time in the image below (click on the chart to see the exact values).

We like that insiders have been buying shares in the last twelve months. Having said that, most people consider earnings and revenue growth trends to be a more meaningful guide to the business. If you are thinking of buying or selling Illumina stock, you should check out this free report showing analyst profit forecasts.

A Different Perspective

While the broader market gained around 34% in the last year, Illumina shareholders lost 1.9%. However, keep in mind that even the best stocks will sometimes underperform the market over a twelve month period. Unfortunately, longer term shareholders are suffering worse, given the loss of 9% doled out over the last five years. We would want clear information suggesting the company will grow, before taking the view that the share price will stabilize. It is all well and good that insiders have been buying shares, but we suggest you check here to see what price insiders were buying at.

Illumina is not the only stock insiders are buying. So take a peek at this free list of small cap companies at attractive valuations which insiders have been buying.

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.