Shareholders in Illumina (NASDAQ:ILMN) have lost 77%, as stock drops 6.8% this past week

It's not possible to invest over long periods without making some bad investments. But really big losses can really drag down an overall portfolio. So spare a thought for the long term shareholders of Illumina, Inc. (NASDAQ:ILMN); the share price is down a whopping 78% in the last three years. That would certainly shake our confidence in the decision to own the stock. And over the last year the share price fell 42%, so we doubt many shareholders are delighted. The falls have accelerated recently, with the share price down 45% in the last three months.

Since Illumina has shed US$884m from its value in the past 7 days, let's see if the longer term decline has been driven by the business' economics.

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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).

Illumina has made a profit in the past. On the other hand, it reported a trailing twelve months loss, suggesting it isn't reliably profitable. Other metrics might give us a better handle on how its value is changing over time.

Given the healthiness of the dividend payments, we doubt that they've concerned the market. Illumina has maintained its top line over three years, so we doubt that has shareholders worried. So it might be worth looking at how revenue growth over time, in greater detail.

The image below shows how earnings and revenue have tracked over time (if you click on the image you can see greater detail).

It's probably worth noting that the CEO is paid less than the median at similar sized 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. So we recommend checking out this free report showing consensus forecasts

A Different Perspective

Investors in Illumina had a tough year, with a total loss of 40% (including dividends), against a market gain of about 6.2%. 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. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 12% over the last half decade. Generally speaking long term share price weakness can be a bad sign, though contrarian investors might want to research the stock in hope of a turnaround. Keeping this in mind, a solid next step might be to take a look at Illumina's dividend track record. This free interactive graph is a great place to start.

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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.