CIEN

ACCE-researched
Ciena Corporation Common Stock
Technology · Communication Equipment · NYSE · United States
$365.96+4.92%
Market cap $49.5BNext earnings 2026-09-03Updated Sep 21, 2026
FAIR VALUE · CONSENSUS
$365.96+0.0%
confidence-weighted across 3 of 6 models
Now $365.96
$365.96
$19.18$36.55
AvoidBronze41
Price vs fair value
1156.4% above
-92.0% to fair value
ACCE score
65
out of 100
Analysts
69% buy
16 covering
P/E
78.2x
forward 40.3x
1-year return
+164.5%
Dividend yield
0.00%
Unlock the ACCE read
INVESTOR

Overview

ACCE thesis

Ciena builds the optical networking hardware and software that carriers and hyperscalers use to move massive volumes of data across long-haul and metro fiber networks, with its WaveLogic coherent optical chipset technology sitting at the core of most large-scale deployments. The hyperscaler buildout cycle - Microsoft, Google, Meta collectively committing hundreds of billions to network infrastructure through 2026 - is a direct demand pull for Ciena's 800G and eventual 1.6T coherent solutions, where switching costs are high and design wins are sticky. Revenue grew 33.1% last year, and the order backlog that built during the supply chain crunch has been normalizing, meaning near-term results now reflect actual demand rather than inventory digestion - a cleaner read on run-rate growth. The forward P/E of 64x is steep relative to that 13.4% operating margin, so the bull case depends entirely on margin expansion as higher-capacity, higher-ASP WaveLogic 6 shipments scale through FY2025. At $78B market cap with ROE still in single digits, this isn't a value setup - it's a bet that hyperscaler fiber spend stays elevated and Ciena captures a disproportionate share at better unit economics than the last cycle.

Written May 18, 2026
Investor warnings · 4 flags
  • high
    Extreme valuation stretch
    P/E 154x, EV/EBITDA 89.9x, P/S 11.7x; current price $451.50 trades 10% above ACCE fair value of $410.
  • high
    Score spike suspicious
    ACCE score jumped +67 points in 90 days (5→72), driven by earnings base effect; 2383% EPS growth likely one-time normalization.
  • moderate
    Insider selling only
    Last 10 disclosed transactions show $0 buys vs $12.02M in sales; no insider conviction at current price levels.
  • moderate
    Net margin thin vs valuation
    Net margin only 7.9% despite 39.5% revenue growth; premium multiples leave little room for execution misses.

Walk me through this stock

Plain-English pros, cons, and what to watch. Pro feature.

PRO

Price

+162.7% · 1Y

Valuation

INVESTOR
Full valuation engine INVESTOR FEATURE

Six independent models converge on one confidence-weighted fair value, with full methodology and editable assumptions.

  • +All six models: DCF, P/E and EV/EBITDA comps, Graham, dividend discount, residual income
  • +Scenario bands, sensitivity tornado, and the 5-year historical valuation range
  • +Editable DCF workbench with saved scenarios

Quality

INVESTOR
Quality and conviction INVESTOR FEATURE

The full quality picture: conviction breakdown, earnings quality, score history, and backtested returns.

  • +Conviction score breakdown and earnings-quality grade
  • +Growth / value / quality / momentum component scores
  • +90-day score history and score-threshold backtests

Analysts

Wall Street consensus

Bullish69% buy · 16 covering analysts
Strong buy 7 Buy 4 Hold 5 Sell 0 Strong sell 0
Analyst intelligence INVESTOR FEATURE

The full analyst picture: the price-target distribution against the current price, forward consensus estimates, and how ACCE's own models compare.

  • +Price-target low / average / high vs the current price, with implied upside
  • +Forward revenue and EPS consensus by fiscal year
  • +ACCE fair-value models lined up against the Street

Smart Money

PRO
Smart money tracking PRO FEATURE

Follow the institutions: 13F position changes, insider trades, and active 13D activist filings.

  • +Quarter-over-quarter institutional position changes
  • +Recent open-market insider transactions
  • +Active 13D activist filings and top holders

Compare

Where it sits vs peers

This stock Peer Peer median weaker → stronger
P/Ebetter than 17% of peers
low 13.5x78.2xhigh 80.0x
ROEbetter than 33% of peers
low 3%22%high 92%
Div yieldbetter than 0% of peers
low 0.0%0.0%high 3.1%

Algorithmic peers (6)

TickerCompanyMcapP/EROED/EYieldQuality
NOKNokia Corporation Sponsored American Depositary Shares$59.8B76.33.5%0.161.3%-Compare
NOKIA.HENokia$61.8B80.03.5%0.161.5%-Compare
UIUbiquiti Inc. Common Stock$35.7B37.291.1%0.010.6%-Compare
ERIC-B.STTelefonaktiebolaget LM Ericsson B$33.3B13.526.1%0.303.0%-Compare
ERICEricsson American Depositary Shares$33.2B13.626.1%0.303.1%-Compare
MSIMotorola Solutions Inc. Common Stock$75.9B36.191.6%3.801.0%-Compare

Sector report card

Where CIEN ranks against its sector peers on each metric.

Computing percentiles…

News and Record

Ask anything, Pro feature

Ask questions about this stock in plain language. Answered from company fundamentals + recent valuations.

PRO

Recent performance

1 week
+14.5%
1 month
-7.5%
3 months
-20.4%
6 months
-16.4%
YTD
+56.5%
1 year
+164.5%

SEC filings

40 filings
September 2026
Sep 17
Form 4Insider transactionPeriod 2026-09-15
Sep 17
Form 4Insider transactionPeriod 2026-09-15
Sep 17
Form 4Insider transactionPeriod 2026-09-15
37 more filings + AI summaries on Investor+.INVESTOR