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 Entera Bio (NASDAQ:ENTX) 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). The first step is to compare its cash burn with its cash reserves, to give us its 'cash runway'.

Check out our latest analysis for Entera Bio

When Might Entera Bio 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 2020, Entera Bio had cash of US$9.8m and no debt. Importantly, its cash burn was US$11m over the trailing twelve months. So it had a cash runway of approximately 11 months from June 2020. That's quite a short cash runway, indicating the company must either reduce its annual cash burn or replenish its cash. The image below shows how its cash balance has been changing over the last few years.

How Is Entera Bio's Cash Burn Changing Over Time?

In our view, Entera Bio doesn't yet produce significant amounts of operating revenue, since it reported just US$256k in the last twelve months. As a result, we think it's a bit early to focus on the revenue growth, so we'll limit ourselves to looking at how the cash burn is changing over time. Over the last year its cash burn actually increased by 28%, which suggests that management are increasing investment in future growth, but not too quickly. That's not necessarily a bad thing, but investors should be mindful of the fact that will shorten the cash runway. 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.

How Easily Can Entera Bio Raise Cash?

Given its cash burn trajectory, Entera Bio shareholders should already be thinking about how easy it might be for it to raise further cash in the future. Companies can raise capital through either debt or equity. Many companies end up issuing new shares to fund future growth. By looking at a company's cash burn relative to its market capitalisation, we gain insight on how much shareholders would be diluted if the company needed to raise enough cash to cover another year's cash burn.