These 4 Measures Indicate That Ciena (NYSE:CIEN) Is Using Debt Extensively

Some say volatility, rather than debt, is the best way to think about risk as an investor, but Warren Buffett famously said that 'Volatility is far from synonymous with risk.' It's only natural to consider a company's balance sheet when you examine how risky it is, since debt is often involved when a business collapses. Importantly, Ciena Corporation (NYSE:CIEN) does carry debt. But the more important question is: how much risk is that debt creating?

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Why Does Debt Bring Risk?

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. Ultimately, if the company can't fulfill its legal obligations to repay debt, shareholders could walk away with nothing. 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 think about a company's use of debt, we first look at cash and debt together.

How Much Debt Does Ciena Carry?

The chart below, which you can click on for greater detail, shows that Ciena had US$1.54b in debt in May 2025; about the same as the year before. On the flip side, it has US$1.25b in cash leading to net debt of about US$286.4m.

How Healthy Is Ciena's Balance Sheet?

Zooming in on the latest balance sheet data, we can see that Ciena had liabilities of US$1.05b due within 12 months and liabilities of US$1.84b due beyond that. Offsetting these obligations, it had cash of US$1.25b as well as receivables valued at US$929.8m due within 12 months. So it has liabilities totalling US$699.2m more than its cash and near-term receivables, combined.

Given Ciena has a humongous market capitalization of US$12.5b, it's hard to believe these liabilities pose much threat. But there are sufficient liabilities that we would certainly recommend shareholders continue to monitor the balance sheet, going forward.

See our latest analysis for Ciena

In order to size up a company's debt relative to its earnings, we calculate its net debt divided by its earnings before interest, tax, depreciation, and amortization (EBITDA) and its earnings before interest and tax (EBIT) divided by its interest expense (its interest cover). This way, we consider both the absolute quantum of the debt, as well as the interest rates paid on it.

While Ciena's low debt to EBITDA ratio of 0.84 suggests only modest use of debt, the fact that EBIT only covered the interest expense by 5.9 times last year does give us pause. But the interest payments are certainly sufficient to have us thinking about how affordable its debt is. Importantly, Ciena's EBIT fell a jaw-dropping 26% in the last twelve months. If that decline continues then paying off debt will be harder than selling foie gras at a vegan convention. 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 Ciena 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, while the tax-man may adore accounting profits, lenders only accept cold hard cash. So the logical step is to look at the proportion of that EBIT that is matched by actual free cash flow. In the last three years, Ciena's free cash flow amounted to 46% of its EBIT, less than we'd expect. That weak cash conversion makes it more difficult to handle indebtedness.

Our View

Ciena's struggle to grow its EBIT had us second guessing its balance sheet strength, but the other data-points we considered were relatively redeeming. For example, its net debt to EBITDA is relatively strong. Looking at all the angles mentioned above, it does seem to us that Ciena is a somewhat risky investment as a result of its debt. Not all risk is bad, as it can boost share price returns if it pays off, but this debt risk is worth keeping in mind. When analysing debt levels, the balance sheet is the obvious place to start. However, not all investment risk resides within the balance sheet - far from it. For example, we've discovered 1 warning sign for Ciena that you should be aware of before investing here.

At the end of the day, it's often better to focus on companies that are free from net debt. You can access our special list of such companies (all with a track record of profit growth). It's free.

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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.