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 while history lauds those rare successes, those that fail are often forgotten; who remembers Pets.com?

Given this risk, we thought we'd take a look at whether Black Diamond Therapeutics (NASDAQ:BDTX) shareholders should be worried about its cash burn. In this article, we define cash burn as its annual (negative) free cash flow, which is the amount of money a company spends each year to fund its growth. We'll start by comparing its cash burn with its cash reserves in order to calculate its cash runway.

Check out our latest analysis for Black Diamond Therapeutics

How Long Is Black Diamond Therapeutics' 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. When Black Diamond Therapeutics last reported its March 2024 balance sheet in May 2024, it had zero debt and cash worth US$115m. In the last year, its cash burn was US$68m. Therefore, from March 2024 it had roughly 20 months of cash runway. While that cash runway isn't too concerning, sensible holders would be peering into the distance, and considering what happens if the company runs out of cash. Depicted below, you can see how its cash holdings have changed over time.

How Is Black Diamond Therapeutics' Cash Burn Changing Over Time?

Because Black Diamond Therapeutics isn't currently generating revenue, we consider it an early-stage business. So while we can't look to sales to understand growth, we can look at how the cash burn is changing to understand how expenditure is trending over time. As it happens, the company's cash burn reduced by 11% over the last year, which suggests that management are maintaining a fairly steady rate of business development, albeit with a slight decrease in spending. 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.

Can Black Diamond Therapeutics Raise More Cash Easily?

Even though it has reduced its cash burn recently, shareholders should still consider how easy it would be for Black Diamond Therapeutics to raise more cash in the future. 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. 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.