Cienavs.Coherent
CIEN vs COHR · both in Data centers, part of the AI & digital infrastructure value chain: Servers, networking, optics and data center capacity that tie AI infrastructure together.
Ciena and Coherent are similar in size by market cap; Coherent trades at the lower P/E (79.5 vs 143.0); year to date, Ciena leads (+59.0% vs +49.3%).
Supply-chain link: Coherent supplies Ciena.
Side by side
| CIEN | COHR | |
|---|---|---|
| Market cap | $62.7B | $64B |
| Price | $387.66 | $288.14 |
| Today | +4.2% | +4.6% |
| Return YTD | +59.0% | +49.3% |
| Return 1Y | +314.2% | +206.4% |
| P/E | 143.0 | 79.5 |
| P/S | 11.3 | 9.0 |
| P/B | 21.7 | 5.9 |
Data as of 2026-08-26 · updates daily after U.S. close
The two companies
CoherentCOHR
Makes the transceivers and lasers that turn data into light for the hop between AI servers.
Full COHR profile →More CIEN & COHR comparisons
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