There's no doubt that money can be made by owning shares of unprofitable businesses. For example, biotech and mining exploration companies often lose money for years before finding success with a new treatment or mineral discovery. But the harsh reality is that very many loss making companies burn through all their cash and go bankrupt.

So, the natural question for Exscientia (NASDAQ:EXAI) shareholders is whether they should be concerned by its rate of 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. Let's start with an examination of the business' cash, relative to its cash burn.

How Long Is Exscientia's Cash Runway?

A company's cash runway is the amount of time it would take to burn through its cash reserves at its current cash burn rate. As at September 2023, Exscientia had cash of UK£367m and such minimal debt that we can ignore it for the purposes of this analysis. In the last year, its cash burn was UK£195m. That means it had a cash runway of around 23 months as of September 2023. That's not too bad, but it's fair to say the end of the cash runway is in sight, unless cash burn reduces drastically. You can see how its cash balance has changed over time in the image below.

How Well Is Exscientia Growing?

One thing for shareholders to keep front in mind is that Exscientia increased its cash burn by 325% in the last twelve months. That's not ideal, but we're made even more nervous given that operating revenue was flat over the same period. Considering these two factors together makes us nervous about the direction the company seems to be heading. 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 Exscientia Raise Cash?

Since Exscientia 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. One of the main advantages held by publicly listed companies is that they can sell shares to investors to raise cash and fund 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 UK£675m, Exscientia's UK£195m in cash burn equates to about 29% of its market value. That's fairly notable cash burn, so if the company had to sell shares to cover the cost of another year's operations, shareholders would suffer some costly dilution.

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

Even though its increasing cash burn makes us a little nervous, we are compelled to mention that we thought Exscientia's cash runway was relatively promising. Looking at the factors mentioned in this short report, we do think that its cash burn is a bit risky, and it does make us slightly nervous about the stock. On another note, we conducted an in-depth investigation of the company, and identified 3 warning signs for Exscientia (1 is concerning!) that you should be aware of before investing here.

Of course Exscientia 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 that insiders are buying.

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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.