CIEN vs RBBN
CIEN: Ciena is a software-driven networking vendor that designs and deploys optical networking and software platforms enabling service providers and enterprises to build high-capacity, intelligent networks. RBBN: Ribbon Communications provides cloud-native voice, networking, and security software and hardware that help service providers and enterprises modernize legacy telecom infrastructure and integrate AI capabilities.
Side-by-side fundamentals
| Metric | CIEN | RBBN | Edge |
|---|---|---|---|
| Price as of 2026-07-22 close | $397.16 | $2.16 | |
| Market cap as of 2026-07-23 | $57.9B | $384M | |
| P/E as of 2026-07-23 | 132.00 | 12.24 | RBBN lower |
| PEG as of 2026-07-23 | 0.43 | n/a | |
| Net margin as of 2026-07-23 | +7.9% | +3.8% | CIEN higher |
| Gross margin as of 2026-07-23 | +43.0% | +49.4% | RBBN higher |
| Operating margin as of 2026-07-23 | +9.2% | -1.9% | CIEN higher |
| ROE as of 2026-07-23 | +15.7% | +7.8% | CIEN higher |
| ROA as of 2026-07-23 | +7.4% | +2.7% | CIEN higher |
| Debt / equity as of 2026-07-23 | 0.53 | 0.79 | CIEN lower |
| Revenue growth (YoY) as of 2026-07-23 | +30.6% | -1.1% | CIEN higher |
| Revenue CAGR (3y) SEC XBRL | +9.5% | +1.0% | CIEN higher |
| Beta as of 2026-07-23 | 1.31 | 1.38 | |
| 1-year return as of 2026-07-22 close | +370.8% | -46.4% | CIEN higher |
Fundamentals: Finnhub, as of 2026-07-23. Filings: SEC EDGAR. Prices are delayed daily-close data.
Last updated 2026-07-22.
Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & Finnhub, shown with their as-of date; "Edge" cells are a pure numeric comparison, not a recommendation.