Just because a business does not make any money, does not mean that the stock will go down. For example, biotech and mining exploration companies often lose money for years before finding success with a new treatment or mineral discovery. But while the successes are well known, investors should not ignore the very many unprofitable companies that simply burn through all their cash and collapse.

So should Prevail Therapeutics (NASDAQ:PRVL) shareholders be worried about its cash burn? For the purpose of this article, we'll define cash burn as the amount of cash the company is spending each year to fund its growth (also called its negative free cash flow). Let's start with an examination of the business's cash, relative to its cash burn.

Check out our latest analysis for Prevail Therapeutics

When Might Prevail Therapeutics Run Out Of Money?

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. As at June 2019, Prevail Therapeutics had cash of US$202m and no debt. Importantly, its cash burn was US$34m over the trailing twelve months. So it had a cash runway of about 5.9 years from June 2019. Even though this is but one measure of the company's cash burn, the thought of such a long cash runway warms our bellies in a comforting way. The image below shows how its cash balance has been changing over the last few years.

How Is Prevail Therapeutics's Cash Burn Changing Over Time?

Because Prevail Therapeutics isn't currently generating revenue, we consider it an early-stage business. Nonetheless, we can still examine its cash burn trajectory as part of our assessment of its cash burn situation. Its cash burn positively exploded in the last year, up 312%. We certainly hope for shareholders' sake that the money is well spent, because that kind of expenditure increase always makes us nervous. While the past is always worth studying, it is the future that matters most of all. For that reason, it makes a lot of sense to take a look at our analyst forecasts for the company.

How Easily Can Prevail Therapeutics Raise Cash?

While Prevail Therapeutics 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. Generally speaking, a listed business can raise new cash through issuing shares or taking on debt. Many companies end up issuing new shares to fund future growth. We can compare a company's cash burn to its market capitalisation to get a sense for how many new shares a company would have to issue to fund one year's operations.

Since it has a market capitalisation of US$439m, Prevail Therapeutics's US$34m in cash burn equates to about 7.9% 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.

How Risky Is Prevail Therapeutics's Cash Burn Situation?

It may already be apparent to you that we're relatively comfortable with the way Prevail Therapeutics is burning through its cash. For example, we think its cash runway suggests that the company is on a good path. 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. Based on the factors mentioned in this article, we think its cash burn situation warrants some attention from shareholders, but we don't think they should be worried. While we always like to monitor cash burn for early stage companies, qualitative factors such as the CEO pay can also shed light on the situation. Click here to see free what the Prevail Therapeutics CEO is paid..

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If you spot an error that warrants correction, please contact the editor at editorial-team@simplywallst.com. This article by Simply Wall St is general in nature. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. Simply Wall St has no position in the stocks mentioned. Thank you for reading.