Arista Networksvs.Ciena
ANET vs CIEN · both in Data centers, part of the AI & digital infrastructure value chain: Servers, networking, optics and data center capacity that tie AI infrastructure together.
Arista Networks is about 4.4× larger than Ciena by market cap; Arista Networks trades at the lower P/E (65.8 vs 92.3); year to date, Ciena leads (+90.9% vs +61.0%).
Side by side
| ANET | CIEN | |
|---|---|---|
| Market cap | $266B | $60.4B |
| Price | $216.74 | $449.77 |
| Today | +2.7% | +5.6% |
| Return YTD | +61.0% | +90.9% |
| Return 1Y | +34.1% | +194.7% |
| Since June 26, 2026 | +37.5% | −6.2% |
| P/E | 65.8 | 92.3 |
| P/S | 25.2 | 10.0 |
| P/B | 18.0 | 19.8 |
Data as of 2026-10-09 · updates daily after U.S. close
Since June 26, 2026: the change in the closing price, from the daily closes Sectivia records itself since that date.
The two companies
Arista NetworksANET
Arista's 800G switches and the EOS software running them sit inside AI data centres, which makes hyperscaler spending the number to watch.
Full ANET profile →More ANET & CIEN comparisons
Other head-to-heads in the Data centers segment.
See where ANET and CIEN sit in the full AI & digital infrastructure map: every segment from suppliers to end markets.Open the AI value chain →