Why did Ciena (CIEN) stock move recently?

On 9/3/2026, Ciena moved -9.0% — Ciena declined despite reporting results and revenue guidance that topped consensus, as investors focused on supply constraints and an implied slowdown in the growth trajectory embedded in the outlook. This is MarketChacha's decoded reason from filings and credible news; it is education, not buy/sell advice.

Is Ciena (CIEN) overvalued or fairly valued?

MarketChacha shows Ciena's valuation in context — a trailing P/E of about 109.0, a forward P/E of about 27.4, a price-to-book of about 15.5 — alongside its revenue and profit growth and whether reported profit converts into operating cash, so you can judge value for yourself. MarketChacha does not issue ratings, price targets, or buy/sell advice.

Does Ciena's reported profit turn into cash?

Over 3 years, operating cash flow fully covered reported profit — earnings are backed by real cash. MarketChacha computes this cash-conversion check (3.22×) from reported figures — education, not a rating.

What is Ciena's revenue?

Ciena reported revenue of $4.8B for FY2025, with net profit of $123.3M, per official filings.

What is the share price of Ciena (CIEN)?

Ciena last traded at $319.38 (+0.6% on the day), as of 9/4/2026 — a delayed quote shown for education, not investment advice.

Ciena

CIEN · NYSE · Technology · United States

Snapshot

TickerCIEN

ExchangeNYSE

SectorTechnology

IndustryCommunication Equipment

CountryUnited States

Employees8,898

HeadquartersHanover, United States

Websitewww.ciena.com

Filings tracked14

About Ciena

Ciena Corporation, a network technology company, provides hardware, software, and services for various network operators in the Americas, Europe, the Middle East, Africa, the Asia Pacific, Japan, and India. It operates through Networking Platforms, Platform Software and Services, Blue Planet Automation Software and Services, and Global Services segments. The Networking Platforms segment consists optical networking, routing, and switching products and services. This segment products include the 6500 Packet-Optical Platform, Waveserver modular interconnect system, the 6500 Reconfigurable Line System, and coherent pluggable transceivers; and the 3000 family of service delivery platforms and the 5000 family of service aggregation, as well as the 8100 Coherent Routing platforms and virtualization software. The Platform Software and Services segment offers navigator network control suite; and software subscription services, consulting, network migration and integration, installation and upgrade support services, and technical support solutions. The Blue Planet Automation Software and Services segment inventory management, orchestration, route optimization and analysis, and unified assurance and analytics software; and sells subscription, installation, support, consulting, and design services related to the Blue Planet automation platform. The Global Services segment provides services for advisory and enablement, implementation, and maintenance, support, and learning activities. Ciena Corporation was incorporated in 1992 and is headquartered in Hanover, Maryland.

Who owns it

Insiders0.6%
Institutions96.0%
Public & other3.4%

1,647 institutional holders

Ownership breakdown from public market data.

Top holders

FMR, LLC13.50%
Blackrock Inc.8.98%
JPMORGAN CHASE & CO7.92%
Vanguard Capital Management LLC6.52%
Vanguard Portfolio Management LLC5.43%
State Street Corporation4.72%
Price (T.Rowe) Associates Inc2.88%
Geode Capital Management, LLC2.38%

Largest institutional holders — last updated 6/30/2026.

Forensic scorecard

Margin has compressed by about 3.2 points over the period — profitability is trending down.

Cash conversion3.22×

Over 3 years, operating cash flow fully covered reported profit — earnings are backed by real cash.

Net margin trend5.8% → 2.6%

Margin has compressed by about 3.2 points over the period — profitability is trending down.

Return on equity4.5%

Latest ROE of 4.5% is on the low side — the business earns a modest return on shareholder capital.

Growth qualityrev 4% · PAT -30%

Profit growth is broadly tracking revenue growth — the earnings trend looks operational rather than one-off.

Computed by MarketChacha from reported figures (SEC XBRL). Education, not a rating or recommendation.

What's expected next

Next quarter

Rev $1.7B · EPS 1.82

Est. earnings growth +100.0%

Next fiscal year

Rev $8.0B · EPS 9.67

Est. earnings growth +47.5%

Analyst consensus estimates — not the company's own guidance.

New to these terms?

P/E ROE ROCE Margins Market cap

Browse the Learn hub →

Financials at a glance

Source: SEC XBRL

Annual

Quarterly · last 8

Revenue (FY2025)

$4.8B

Net margin

2.6%

ROE

4.5%

Revenue CAGR (2y)

+4.3%

Profit CAGR (2y)

-30.4%

EPS (FY2025)

0.85

Net profit (FY2025)

$123.3M

Ask MarketChacha about CIEN

Get a cited, plain-English answer — the “why”, not just data. Finance research only, never buy/sell advice.

Why it moved

Sep 3, 2026
Ciena declined despite reporting results and revenue guidance that topped consensus, as investors focused on supply constraints and an implied slowdown in the growth trajectory embedded in the outlook.
source 1 ↗source 2 ↗· confidence: medium
Sep 1, 2026
Ciena fell 5.87% with the broader communication equipment sector amid synchronized selling in peers like LITE and VIAV, with no company-specific news or filings cited as the driver.
source 1 ↗· confidence: medium
Aug 25, 2026
No clear company-specific catalyst identified in recent filings or credible coverage; Ciena rose with broader AI networking sector or market rebound after prior-day weakness.
· confidence: low
Aug 4, 2026
Ciena shares rose on momentum from its Zacks Bull of the Day highlight and a new press release announcing successful completion of the world's first 1.6 Tb/s quantum-safe optical encryption trial on a live commercial network with Quantum Corridor and Toshiba.
source 1 ↗source 2 ↗· confidence: medium
Jul 28, 2026
Ciena shares declined with no new company-specific catalyst reported; the move appears to reflect ongoing sector sentiment and institutional holdings reductions noted in recent coverage.
source 1 ↗· confidence: low
Jul 27, 2026
No specific company catalyst or filing identified for the drop; shares fell with limited news coverage beyond the price movement itself.
· confidence: low
Jul 24, 2026
No company-specific catalyst identified in filings or today's coverage; the decline appears to reflect broader sector or market sentiment in AI/optical networking stocks.
· confidence: low

Daily moves with the verified reason behind them. Education only — not investment advice.

On MarketChacha

Posts about CIEN

Financials

Yearly

Period	Revenue	Net profit	EPS	Net margin	ROE
FY2025	$4.8B	$123.3M	0.85	2.6%	4.5%
FY2024	$4.0B	$84.0M	0.58	2.1%	3.0%
FY2023	$4.4B	$254.8M	1.71	5.8%	8.9%

Quarterly

Period	Revenue	Net profit	EPS	Net margin
2026Q2	$1.6B	$218.2M	1.49	13.9%
2026Q1	$1.4B	$150.3M	1.03	10.5%
2025Q3	$1.2B	$50.3M	0.35	4.1%
2025Q2	$1.1B	$9.0M	0.06	0.8%
2025Q1	$1.1B	$44.6M	0.31	4.2%
2024Q3	$942.3M	$14.2M	0.10	1.5%
2024Q2	$910.8M	$-16.8M	-0.12	-1.8%
2024Q1	$1.0B	$49.5M	0.34	4.8%
2023Q3	$1.1B	$29.7M	0.20	2.8%
2023Q2	$1.1B	$57.7M	0.38	5.1%
2023Q1	$1.1B	$76.2M	0.51	7.2%

Figures as reported, in reporting currency. Source: SEC XBRL.

Filings & announcements

2026

8-K — Material agreement, Material financial obligation, Unregistered equity sale, Other events, Exhibits
SEC6/11/2026material
8-K — Other events, Exhibits
SEC6/8/2026material
8-K — Results of operations, Exhibits
SEC6/4/2026material
10-Q filing
SEC6/4/2026
8-K — Shareholder vote results
SEC3/31/2026material
8-K — Results of operations, Exhibits
SEC3/5/2026material
10-Q filing
SEC3/5/2026

2025

10-K filing
SEC12/12/2025
8-K — Results of operations, Exhibits
SEC12/11/2025material
8-K — Executive/director change
SEC12/4/2025material
8-K — Other events
SEC10/7/2025material
8-K — Other events, Exhibits
SEC9/22/2025material
8-K — Results of operations, Exhibits
SEC9/4/2025material
10-Q filing
SEC9/4/2025

In the news

Education and discussion only — not investment advice. Financials from official filings (SEC/BSE) and reported company statements; market figures (delayed market data) are delayed and shown for reference only. Verify with the linked sources before acting.