There's no doubt that money can be made by owning shares of unprofitable businesses. For example, although software-as-a-service business Salesforce.com lost money for years while it grew recurring revenue, if you held shares since 2005, you'd have done very well indeed. Having said that, unprofitable companies are risky because they could potentially burn through all their cash and become distressed.

So, the natural question for Carnarvon Energy (ASX:CVN) shareholders is whether they should be concerned by its rate of cash burn. In this article, we define cash burn as its annual (negative) free cash flow, which is the amount of money a company spends each year to fund its growth. Let's start with an examination of the business' cash, relative to its cash burn.

View our latest analysis for Carnarvon Energy

How Long Is Carnarvon Energy's Cash Runway?

A cash runway is defined as the length of time it would take a company to run out of money if it kept spending at its current rate of cash burn. In December 2021, Carnarvon Energy had AU$78m in cash, and was debt-free. Importantly, its cash burn was AU$25m over the trailing twelve months. So it had a cash runway of about 3.1 years from December 2021. A runway of this length affords the company the time and space it needs to develop the business. The image below shows how its cash balance has been changing over the last few years. debt-equity-history-analysis

How Is Carnarvon Energy's Cash Burn Changing Over Time?

Carnarvon Energy didn't record any revenue over the last year, indicating that it's an early stage company still developing its business. So while we can't look to sales to understand growth, we can look at how the cash burn is changing to understand how expenditure is trending over time. Over the last year its cash burn actually increased by a very significant 82%. While this spending increase is no doubt intended to drive growth, if the trend continues the company's cash runway will shrink very quickly. While the past is always worth studying, it is the future that matters most of all. So you might want to take a peek at how much the company is expected to grow in the next few years.

Can Carnarvon Energy Raise More Cash Easily?

While Carnarvon Energy does have a solid cash runway, its cash burn trajectory may have some shareholders thinking 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).

Carnarvon Energy has a market capitalisation of AU$369m and burnt through AU$25m last year, which is 6.8% of the company's 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.

Is Carnarvon Energy's Cash Burn A Worry?

It may already be apparent to you that we're relatively comfortable with the way Carnarvon Energy 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. Although we do find its increasing cash burn to be a bit of a negative, once we consider the other metrics mentioned in this article together, the overall picture is one we are comfortable with. Looking at all the measures in this article, together, we're not worried about its rate of cash burn; the company seems well on top of its medium-term spending needs. Separately, we looked at different risks affecting the company and spotted 3 warning signs for Carnarvon Energy (of which 2 don't sit too well with us!) you should know about.

Of course, you might find a fantastic investment by looking elsewhere. So take a peek at this freelist of companies insiders are buying, and this list of stocks growth stocks (according to analyst forecasts)

Have feedback on this article? Concerned about the content?Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.

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.

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