# Ciena Corp (CIEN)

- Sector: Technology · Industry: Communication Equipment
- SEC CIK: 0000936395 ([filings on EDGAR](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000936395))
- Full page: https://inspectstocks.com/stocks/cien
- Data as of: price 2026-09-25; newest filing used 2026-09-03; latest fiscal period ended 2026-08-01

## Grade

**A+** on the growth-and-cash rubric, 5 of 5 checks passed.

| Check | Result | Now | Before |
| --- | --- | --- | --- |
| Revenue growing overall | passed | $6B | $4.2B |
| Revenue growing recently | passed | $6B | $4.8B |
| Free cash flow positive | passed | $814.4M |  |
| Free cash flow growing overall | passed | $814.4M | -$149M |
| Free cash flow growing recently | passed | $814.4M | $665.3M |

Business quality (the + / − mark): 5 of 6 checks passed.

| Check | Result | Now | Before |
| --- | --- | --- | --- |
| Profitable | passed | 10.9% |  |
| Healthy profit margin | passed | 10.9% |  |
| Strong operating margin | failed | 12.3% |  |
| Good return on equity | passed | 24.0% |  |
| Debt under control | passed | 0.60 |  |
| Turns sales into cash | passed | 13.5% |  |

How the grade works: the letter counts failed checks (none → A, one → B, two → C, three → D, four or more → F). It is built from SEC filings only — the share price never enters it — and describes the business, not whether the stock is worth buying.

## Key figures

In US dollars, as filed.

| Measure | Value |
| --- | --- |
| Revenue, trailing twelve months | $6B |
| Net income, trailing twelve months | $654.4M |
| Free cash flow, trailing twelve months | $814.4M |
| Net margin | 10.9% |
| Operating margin | 12.3% |
| Return on equity | 24.0% |
| Debt to equity | 0.60 |
| Diluted EPS, trailing twelve months | $4.48 |
| Share price | $356.91 |
| Market value | $50.6B |
| Price / earnings | 79.7x |
| Price / sales | 8.4x |

## More on this company

- [Overview](https://inspectstocks.com/stocks/cien)
- [Financial statements](https://inspectstocks.com/stocks/cien/financials)
- [Competitors](https://inspectstocks.com/stocks/cien/peers)
- [Earnings](https://inspectstocks.com/stocks/cien/earnings)

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Source: InspectStocks, built from the company’s own SEC filings. This describes a business — it is not investment advice and not a recommendation to buy or sell anything.