We can readily understand why investors are attracted to unprofitable companies. For example, although Amazon.com made losses for many years after listing, if you had bought and held the shares since 1999, you would have made a fortune. But while history lauds those rare successes, those that fail are often forgotten; who remembers Pets.com?

So, the natural question for Amarin (NASDAQ:AMRN) shareholders is whether they should be concerned by its rate of cash burn. In this report, we will consider the company's annual negative free cash flow, henceforth referring to it as the 'cash burn'. First, we'll determine its cash runway by comparing its cash burn with its cash reserves.

View our latest analysis for Amarin

Does Amarin Have A Long Cash Runway?

A company's cash runway is calculated by dividing its cash hoard by its cash burn. When Amarin last reported its September 2024 balance sheet in October 2024, it had zero debt and cash worth US$306m. In the last year, its cash burn was US$19m. That means it had a cash runway of very many years as of September 2024. While this is only one measure of its cash burn situation, it certainly gives us the impression that holders have nothing to worry about. The image below shows how its cash balance has been changing over the last few years.

Is Amarin's Revenue Growing?

Given that Amarin actually had positive free cash flow last year, before burning cash this year, we'll focus on its operating revenue to get a measure of the business trajectory. Regrettably, the company's operating revenue moved in the wrong direction over the last twelve months, declining by 25%. Clearly, however, the crucial factor is whether the company will grow its business going forward. For that reason, it makes a lot of sense to take a look at our analyst forecasts for the company.

How Hard Would It Be For Amarin To Raise More Cash For Growth?

Since its revenue growth is moving in the wrong direction, Amarin shareholders may wish to think ahead to when the company may need to raise more cash. Issuing new shares, or taking on debt, are the most common ways for a listed company to raise more money for its business. Many companies end up issuing new shares to fund future growth. By comparing a company's annual cash burn to its total market capitalisation, we can estimate roughly how many shares it would have to issue in order to run the company for another year (at the same burn rate).

Since it has a market capitalisation of US$242m, Amarin's US$19m in cash burn equates to about 7.8% of its market value. That's a low proportion, so we figure the company would be able to raise more cash to fund growth, with a little dilution, or even to simply borrow some money.

So, Should We Worry About Amarin's Cash Burn?

It may already be apparent to you that we're relatively comfortable with the way Amarin is burning through its cash. In particular, we think its cash runway stands out as evidence that the company is well on top of its spending. While its falling revenue wasn't great, the other factors mentioned in this article more than make up for weakness on that measure. After taking into account the various metrics mentioned in this report, we're pretty comfortable with how the company is spending its cash, as it seems on track to meet its needs over the medium term. On another note, we conducted an in-depth investigation of the company, and identified 2 warning signs for Amarin (1 makes us a bit uncomfortable!) that you should be aware of before investing here.

Of course Amarin may not be the best stock to buy. So you may wish to see this free collection of companies boasting high return on equity, or this list of stocks with high insider ownership.

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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.