CIEN vs RBBN
CIEN: Ciena provides high-speed optical networking, routing, and automation software designed to scale network capacity and meet the massive bandwidth demands driven by artificial intelligence and cloud computing. RBBN: Ribbon Communications provides secure, cloud-centric networking and communication solutions that connect service providers and enterprises to the evolving AI-enabled digital landscape.
Side-by-side fundamentals
| Metric | CIEN | RBBN | Edge |
|---|---|---|---|
| Price as of 2026-10-21 close | $361.34 | $1.36 | |
| Market cap | $51.2B | $243M | |
| P/E as of 2026-10-21 | 80.84 | 17.00 | RBBN lower |
| Net margin FY2025, SEC XBRL | +2.6% | +4.7% | RBBN higher |
| Gross margin FY2025, SEC XBRL | +42.0% | +49.8% | RBBN higher |
| Operating margin FY2025, SEC XBRL | +4.1% | -0.4% | CIEN higher |
| ROE FY2025, SEC XBRL | +4.5% | +8.8% | RBBN higher |
| ROA FY2025, SEC XBRL | +2.1% | +3.3% | RBBN higher |
| Debt / equity | 1.06 | 0.84 | RBBN lower |
| Revenue growth (YoY) FY2025, SEC XBRL | +18.8% | +1.3% | CIEN higher |
| Revenue CAGR (3y) SEC XBRL | +9.5% | +1.0% | CIEN higher |
| Dividend streak (yrs) SEC XBRL | 0 | 0 | Tie |
| Beta as of 2026-09-03 | 2.03 | 1.48 | |
| 1-year return as of 2026-10-21 close | +112.9% | -66.3% | CIEN higher |
Fundamentals: SEC XBRL company filings for the figures marked with a fiscal year, and market data, as of 2026-09-03 for the rest. Filings: SEC EDGAR. Prices are delayed daily-close data.
Last updated 2026-10-21.
Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & market data, shown with their as-of date; "Edge" cells are a pure numeric comparison, not a recommendation.