Cienavs.Cisco
CIEN vs CSCO · both in Data centers, part of the AI & digital infrastructure value chain: Servers, networking, optics and data center capacity that tie AI infrastructure together.
Cisco is about 7.3× larger than Ciena by market cap; Cisco trades at the lower P/E (40.0 vs 148.8); year to date, Ciena leads (+97.0% vs +57.5%).
Side by side
| CIEN | CSCO | |
|---|---|---|
| Market cap | $65.2B | $478B |
| Price | $460.72 | $121.31 |
| Today | −0.4% | +2.5% |
| Return YTD | +97.0% | +57.5% |
| Return 1Y | +487.3% | +76.4% |
| P/E | 148.8 | 40.0 |
| P/S | 11.7 | 7.9 |
| P/B | 22.5 | 9.8 |
Data as of 2026-07-11 · updates daily after U.S. close
The two companies
CienaCIEN
Leading in long-distance optical transmission — connecting data centers with each other (data center interconnect).
Full CIEN profile →CiscoCSCO
The world's largest networking company — broad portfolio of switches, routers and security with a growing AI order book among hyperscalers.
Full CSCO profile →More comparisons in Data centers
See where CIEN and CSCO sit in the full AI & digital infrastructure map — every segment from suppliers to end markets.Open the AI value chain →