Can Spero Therapeutics (NASDAQ:SPRO) Afford To Invest In Growth?

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There's no doubt that money can be made by owning shares of unprofitable businesses. 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 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 Spero Therapeutics (NASDAQ:SPRO) shareholders be worried about its cash burn? For the purposes of this article, cash burn is the annual rate at which an unprofitable company spends cash to fund its growth; its negative free cash flow. The first step is to compare its cash burn with its cash reserves, to give us its 'cash runway'.

See our latest analysis for Spero Therapeutics

When Might Spero 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. In June 2022, Spero Therapeutics had US$45m in cash, and was debt-free. Importantly, its cash burn was US$84m over the trailing twelve months. That means it had a cash runway of around 7 months as of June 2022. Notably, analysts forecast that Spero Therapeutics will break even (at a free cash flow level) in about 4 years. That means unless the company reduces its cash burn quickly, it may well look to raise more cash. Depicted below, you can see how its cash holdings have changed over time.

debt-equity-history-analysis
debt-equity-history-analysis

How Well Is Spero Therapeutics Growing?

Some investors might find it troubling that Spero Therapeutics is actually increasing its cash burn, which is up 20% in the last year. And we must say we find it concerning that operating revenue dropped 46% over the same period. Considering both these metrics, we're a little concerned about how the company is developing. 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 Spero Therapeutics To Raise More Cash For Growth?

Since Spero Therapeutics can't yet boast improving growth metrics, the market will likely be considering how it can raise more cash if need be. 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. 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$25m, Spero Therapeutics' US$84m in cash burn equates to about 328% of its market value. Given just how high that expenditure is, relative to the company's market value, we think there's an elevated risk of funding distress, and we would be very nervous about holding the stock.

Is Spero Therapeutics' Cash Burn A Worry?

As you can probably tell by now, we're rather concerned about Spero Therapeutics' cash burn. Take, for example, its cash burn relative to its market cap, which suggests the company may have difficulty funding itself, in the future. While not as bad as its cash burn relative to its market cap, its increasing cash burn is also a concern, and considering everything mentioned above, we're struggling to find much to be optimistic about. One real positive is that analysts are forecasting that the company will reach breakeven. The measures we've considered in this article lead us to believe its cash burn is actually quite concerning, and its weak cash position seems likely to cost shareholders one way or another. On another note, we conducted an in-depth investigation of the company, and identified 5 warning signs for Spero Therapeutics (1 is potentially serious!) that you should be aware of before investing here.

If you would prefer to check out another company with better fundamentals, then do not miss this free list of interesting companies, that have HIGH return on equity and low debt or this list of stocks which are all forecast to grow.

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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