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Prothena (NASDAQ:PRTA) Is In A Good Position To Deliver On Growth Plans

Simply Wall St

We can readily understand why investors are attracted to unprofitable companies. 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, the natural question for Prothena (NASDAQ:PRTA) 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.

See our latest analysis for Prothena

How Long Is Prothena'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. As at September 2019, Prothena had cash of US$390m and no debt. Importantly, its cash burn was US$62m over the trailing twelve months. That means it had a cash runway of about 6.3 years as of September 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. Depicted below, you can see how its cash holdings have changed over time.

NasdaqGS:PRTA Historical Debt, November 19th 2019

How Is Prothena's Cash Burn Changing Over Time?

In our view, Prothena doesn't yet produce significant amounts of operating revenue, since it reported just US$752k in the last twelve months. Therefore, for the purposes of this analysis we'll focus on how the cash burn is tracking. Over the last year its cash burn actually increased by 30%, which suggests that management are increasing investment in future growth, but not too quickly. However, the company's true cash runway will therefore be shorter than suggested above, if spending continues to increase. Clearly, however, the crucial factor is whether the company will grow its business going forward. So you might want to take a peek at how much the company is expected to grow in the next few years.

Can Prothena Raise More Cash Easily?

Given its cash burn trajectory, Prothena shareholders may wish to consider how easily it could raise more cash, despite its solid cash runway. 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$409m, Prothena's US$62m in cash burn equates to about 15% of its market value. Given that situation, it's fair to say the company wouldn't have much trouble raising more cash for growth, but shareholders would be somewhat diluted.

How Risky Is Prothena's Cash Burn Situation?

It may already be apparent to you that we're relatively comfortable with the way Prothena is burning through its cash. For example, we think its cash runway suggests that the company is on a good path. Although its increasing cash burn does give us reason for pause, the other metrics we discussed in this article form a positive picture overall. Considering all the factors discussed in this article, we're not overly concerned about the company's cash burn, although we do think shareholders should keep an eye on how it develops. 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 Prothena CEO is paid..

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

We aim to bring you long-term focused research analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material.

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.