Legendary fund manager Li Lu (who Charlie Munger backed) once said, 'The biggest investment risk is not the volatility of prices, but whether you will suffer a permanent loss of capital.' So it might be obvious that you need to consider debt, when you think about how risky any given stock is, because too much debt can sink a company. As with many other companies Hologic, Inc. (NASDAQ:HOLX) makes use of debt. But should shareholders be worried about its use of debt?

What Risk Does Debt Bring?

Debt is a tool to help businesses grow, but if a business is incapable of paying off its lenders, then it exists at their mercy. In the worst case scenario, a company can go bankrupt if it cannot pay its creditors. However, a more frequent (but still costly) occurrence is where a company must issue shares at bargain-basement prices, permanently diluting shareholders, just to shore up its balance sheet. Of course, plenty of companies use debt to fund growth, without any negative consequences. When we examine debt levels, we first consider both cash and debt levels, together.

What Is Hologic's Debt?

You can click the graphic below for the historical numbers, but it shows that Hologic had US$2.56b of debt in December 2023, down from US$2.83b, one year before. However, it also had US$1.94b in cash, and so its net debt is US$622.0m.

How Strong Is Hologic's Balance Sheet?

Zooming in on the latest balance sheet data, we can see that Hologic had liabilities of US$899.0m due within 12 months and liabilities of US$2.92b due beyond that. Offsetting these obligations, it had cash of US$1.94b as well as receivables valued at US$670.9m due within 12 months. So its liabilities total US$1.21b more than the combination of its cash and short-term receivables.

Since publicly traded Hologic shares are worth a very impressive total of US$18.3b, it seems unlikely that this level of liabilities would be a major threat. Having said that, it's clear that we should continue to monitor its balance sheet, lest it change for the worse.

We use two main ratios to inform us about debt levels relative to earnings. The first is net debt divided by earnings before interest, tax, depreciation, and amortization (EBITDA), while the second is how many times its earnings before interest and tax (EBIT) covers its interest expense (or its interest cover, for short). This way, we consider both the absolute quantum of the debt, as well as the interest rates paid on it.

Hologic has net debt of just 0.50 times EBITDA, suggesting it could ramp leverage without breaking a sweat. And remarkably, despite having net debt, it actually received more in interest over the last twelve months than it had to pay. So there's no doubt this company can take on debt while staying cool as a cucumber. In fact Hologic's saving grace is its low debt levels, because its EBIT has tanked 28% in the last twelve months. Falling earnings (if the trend continues) could eventually make even modest debt quite risky. There's no doubt that we learn most about debt from the balance sheet. But ultimately the future profitability of the business will decide if Hologic can strengthen its balance sheet over time. So if you're focused on the future you can check out this free report showing analyst profit forecasts.

Finally, a company can only pay off debt with cold hard cash, not accounting profits. So we always check how much of that EBIT is translated into free cash flow. Happily for any shareholders, Hologic actually produced more free cash flow than EBIT over the last three years. There's nothing better than incoming cash when it comes to staying in your lenders' good graces.

Our View

Hologic's interest cover suggests it can handle its debt as easily as Cristiano Ronaldo could score a goal against an under 14's goalkeeper. But we must concede we find its EBIT growth rate has the opposite effect. We would also note that Medical Equipment industry companies like Hologic commonly do use debt without problems. When we consider the range of factors above, it looks like Hologic is pretty sensible with its use of debt. While that brings some risk, it can also enhance returns for shareholders. There's no doubt that we learn most about debt from the balance sheet. However, not all investment risk resides within the balance sheet - far from it. Case in point: We've spotted 2 warning signs for Hologic you should be aware of.

If, after all that, you're more interested in a fast growing company with a rock-solid balance sheet, then check out our list of net cash growth stocks without delay.

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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.