ADTN vs CIEN
ADTN: ADTRAN provides end-to-end fiber-based networking and AI-driven cloud software for service providers and enterprises, connecting the network core to the subscriber edge. 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.
Side-by-side fundamentals
| Metric | ADTN | CIEN | Edge |
|---|---|---|---|
| Price as of 2026-10-20 close | $6.58 | $341.95 | |
| Market cap | $536M | $48.5B | |
| P/E as of 2026-10-20 | n/a | 76.50 | |
| Net margin FY2025, SEC XBRL | -4.2% | +2.6% | CIEN higher |
| Gross margin FY2025, SEC XBRL | +38.3% | +42.0% | CIEN higher |
| Operating margin FY2025, SEC XBRL | -1.4% | +4.1% | CIEN higher |
| ROE FY2025, SEC XBRL | -31.3% | +4.5% | CIEN higher |
| ROA FY2025, SEC XBRL | -3.8% | +2.1% | CIEN higher |
| Debt / equity filed borrowings, leases excl., balance sheet 2026-08-01 | n/a | 1.06 | |
| Revenue growth (YoY) FY2025, SEC XBRL | +17.5% | +18.8% | CIEN higher |
| Revenue CAGR (3y) SEC XBRL | +1.9% | +9.5% | CIEN higher |
| Dividend streak (yrs) SEC XBRL | 7 | 0 | ADTN higher |
| Beta as of 2026-09-03 | 1.69 | 2.03 | |
| 1-year return as of 2026-10-20 close | -28.3% | +97.5% | 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 2026-10-20.
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.