Just because a business does not make any money, does not mean that the stock will go down. For example, although software-as-a-service business Salesforce.com lost money for years while it grew recurring revenue, if you held shares since 2005, you'd have done very well indeed. 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 Generation Bio (NASDAQ:GBIO) shareholders should be worried about its cash burn. In this report, we will consider the company's annual negative free cash flow, henceforth referring to it as the 'cash burn'. We'll start by comparing its cash burn with its cash reserves in order to calculate its cash runway.

See our latest analysis for Generation Bio

When Might Generation Bio Run Out Of Money?

You can calculate a company's cash runway by dividing the amount of cash it has by the rate at which it is spending that cash. As at September 2023, Generation Bio had cash of US$291m and no debt. In the last year, its cash burn was US$54m. That means it had a cash runway of about 5.4 years as of September 2023. 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. You can see how its cash balance has changed over time in the image below.

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

In our view, Generation Bio doesn't yet produce significant amounts of operating revenue, since it reported just US$3.0m 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. Even though it doesn't get us excited, the 51% reduction in cash burn year on year does suggest the company can continue operating for quite some time. 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.

Can Generation Bio Raise More Cash Easily?

There's no doubt Generation Bio's rapidly reducing cash burn brings comfort, but even if it's only hypothetical, it's always worth asking how easily it could raise more money to fund further growth. Companies can raise capital through either debt or equity. Commonly, a business will sell new shares in itself to raise cash and drive 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).