What is the 13F Pro Quality Score for CIEN?

13F Pro ranks CIENA CORP (CIEN) on the 13F Pro Quality Score, a 0–100 composite of 32 fundamental signals including return on invested capital, free cash flow consistency, balance-sheet strength, earnings quality, growth durability, and valuation discipline. The score refreshes after each 10-K and 10-Q filing on SEC EDGAR. View CIEN's current score at https://13fpro.ai/research/CIEN (free sign-up required for the full ranking).

Which hedge funds own the most CIEN stock?

Based on the most recent Form 13F-HR filings on SEC EDGAR, the largest reported institutional holders of CIEN include FMR, BlackRock,, VANGUARD CAPITAL MANAGEMENT. Holdings are reported quarterly within 45 days of quarter-end and updated on https://13fpro.ai/research/CIEN as soon as new 13F filings post.

Where does 13F Pro source CIEN data?

All CIENA CORP fundamentals and ownership data come directly from SEC EDGAR. CIENA CORP files with the SEC under CIK 936395. 13F Pro ingests XBRL financial facts from 10-K and 10-Q filings, Form 13F-HR institutional holdings, and Form 4 insider transactions, with no third-party rewrites or estimates.

What sector is CIEN in?

CIENA CORP (CIEN) is classified in the Technology sector. 13F Pro publishes sector-level fund flow analysis and quality leaders at https://13fpro.ai/research/sector/technology.

What drives CIEN's revenue?

Per CIENA CORP's latest 10-Q filed with the SEC on 2026-06-04, the biggest revenue drivers are: Networking Platforms ($1,274.1M, +47.1% YoY); Global Services ($179.4M, +22.7% YoY); Platform Software and Services ($93.9M, +9.9% YoY). Figures are extracted from the filing text and machine-verified against the document. Full breakdown at https://13fpro.ai/research/CIEN.

What are CIEN's largest expenses?

CIENA CORP's latest 10-Q reports these as the largest expense items: Research and development ($237.9M, +10.7% YoY); Selling and marketing ($150.0M, +7.4% YoY); General and administrative ($61.2M, +7.5% YoY). Sourced directly from SEC EDGAR filing text for Q2 FY2026 (quarter ended May 2, 2026).

How often is CIEN research updated on 13F Pro?

CIEN's fundamentals refresh within hours of each new 10-K or 10-Q filing on SEC EDGAR. Institutional ownership updates after each quarterly 13F filing window. Insider transactions update after each Form 4 filing. The 13F Pro Quality Score recalculates after every fundamentals refresh.

CIENA CORP(CIEN)Stock Analysis

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13F Pro Quality Score

70.7/100

Rank #298 of 2,879 stocksTOP 25%

View Technology peers →

Rankings refresh quarterly once 80% of peers have filed (~45 days after quarter-end). Next update: ~Aug 14, 2026.

Revenue Growth

78.8/100

Profitability

73.5/100

Balance Sheet

79.3/100

Earnings Quality

95.2/100

Free Cash Flow

67.2/100

Institutional Flow

4.1/100

Revenue Scale

78.9/100

Dilution Risk

29.5/100

CIEN Stock Analysis & AI Quality Score

AI stock analysis and institutional research for CIENA CORP (CIEN), a Technology sector company. 13F Pro's AI-powered ranking engine scores CIEN at 70.7/100 on a 32-signal composite quality model, placing it at rank #298 of 2,879 stocks — the top 25% of the AI-ranked universe. CIEN scores in the top quartile across earnings quality (95.2), balance sheet strength (79.3), revenue scale (78.9). Areas of concern include institutional flow (4.1), which score below median versus the broader universe. Shareholder dilution risk is elevated at 29.5/100, reflecting ongoing share issuance or stock-based compensation. Based on the latest XBRL financial filings (Q2 2026), CIENA CORP reports quarterly revenue of $1.6B, net income of $218.2M, free cash flow of $218.7M. Top institutional holders of CIEN by reported 13-F value include FMR, BlackRock,, VANGUARD CAPITAL MANAGEMENT, based on the most recent SEC filings. CIEN trades on the NYSE exchange and files with the SEC under CIK 936395. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate CIEN daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for CIENA CORP directly from SEC EDGAR. CIENA CORP's 13F Pro composite quality score has ranged between 8 and 71 since 2021, currently 70.7 — an improving long-term trajectory across 56 quarterly and live scoring snapshots.

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Fun facts about CIENA CORP

Quirks, history, and lore behind CIEN — the kind of stuff that makes a stock memorable.

1
The Basics
U.S. technology company · mid-cap · listed on Nasdaq · headquartered in Maryland.
2
The Numbers
Annual revenue in the range of roughly $1 billion, with a customer base dominated by the world's largest telecom carriers and cloud providers.
3
The History
Founded in 1992, it rode the fiber-optic boom, nearly went under after the dot-com bust, and clawed back to become a backbone of modern optical networking.
4
The Secret
It doesn't make phones or consumer gadgets — it makes the optical networking hardware and software that lets carriers move massive amounts of data across continents at the speed of light.
5
The Lore
Its WaveLogic coherent optical chip technology is considered among the most advanced in the industry, and it counts most of the world's major Tier-1 carriers as repeat customers.
6
The Giveaway
Four letters, rhymes with a Mediterranean island — this optical networking specialist from Hanover, Maryland keeps the internet's fiber arteries humming.

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What's Driving CIEN's Business? Latest 10-Q Breakdown

AI-extracted from CIENA CORP's 10-Q filed 2026-06-04 — Q2 FY2026 (quarter ended May 2, 2026). Every figure is machine-verified against the filing text on SEC EDGAR.

Ciena's Q2 revenue surged 40% YoY to $1.6B, driven by AI and cloud capex, with gross margin expanding 380bps to 44.0% despite a $2.8B backlog of component commitments.

Biggest Revenue Drivers

Total revenue: $1,570.7M+39.5% YoY

Networking Platforms$1,274.1M+47.1% YoY

Optical Networking (+42.2% YoY) and Routing and Switching (+87.9% YoY) driven by Waveserver system and 6500 RLS sales for cloud and AI networking.

Global Services$179.4M+22.7% YoY

Implementation and maintenance, support, and learning services revenue increased, primarily reflecting sales increases in implementation services.

Platform Software and Services$93.9M+9.9% YoY

Navigator Network Control Suite software sales increase, partially offset by software consulting services sales decreases.

Blue Planet Automation Software and Services$23.4M-16.4% YoY

Sales decrease in unified assurance and analytics software.

Largest Expense Items

Research and development$237.9M+10.7% YoY

Higher employee headcount and costs including acquisition of Nubis Communications, technology and engineering design development costs.

Selling and marketing$150.0M+7.4% YoY

Increases in employee-related compensation costs.

General and administrative$61.2M+7.5% YoY

Increases in employee-related compensation costs.

Margins: Gross margin expanded 380bps to 44.0% in Q2, driven by product margin improvement from cost reduction, pricing optimization, and favorable product mix, partially offset by lower manufacturing efficiencies and a less favorable services mix.

Watch Items from the Filing

Outstanding purchase order commitments to suppliers totaled $2.8B as of May 2, 2026; only a portion is non-cancellable, creating inventory risk amid supply chain volatility.
Blue Planet segment swung to $2.8M loss in Q2 from $6.5M profit YoY, with six-month loss of $6.7M vs $13.0M profit, signaling persistent margin pressure and lower demand.
Remaining Performance Obligations (RPO) of $2.5B as of May 2, 2026, with majority expected to be satisfied within one year, supporting near-term revenue visibility.

AI-extracted and verified against SEC EDGAR filing text. Not investment advice.

Read the full 10-Q on SEC EDGAR →Share on X

Revenue

Q2 2026

$1.6B

Net Income

Q2 2026

$218.2M

Free Cash Flow

Q2 2026

$218.7M

ROIC

Q2 2026

5.4%

D/E Ratio

Q2 2026

0.53

Revenue & Net Income

Earnings Per Share

Key Financials Over Time

Export Financial Table · Pro+

Revenue

+18.8% YoY

$4.77BFY 2025

FY22 $3.63BFY23 $4.39BFY24 $4.01BFY25 $4.77B

Net Income

+46.9% YoY

$123.3MFY 2025

FY22 $152.9MFY23 $254.8MFY24 $84.0MFY25 $123.3M

Operating Income

+18.6% YoY

$197.5MFY 2025

FY22 $222.8MFY23 $357.5MFY24 $166.6MFY25 $197.5M

EPS (Diluted)

+46.6% YoY

$0.85FY 2025

FY22 $1.00FY23 $1.71FY24 $0.58FY25 $0.85

Total Assets

+4.0% YoY

$5.86BFY 2025

FY22 $5.07BFY23 $5.60BFY24 $5.64BFY25 $5.86B

Total Debt

-0.6% YoY

$1.54BFY 2025

FY22 $1.07BFY23 $1.56BFY24 $1.54BFY25 $1.54B

Op. Cash Flow

+56.7% YoY

$806.1MFY 2025

FY22 $-167.8MFY23 $168.3MFY24 $514.5MFY25 $806.1M

Metric	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021	FY 2020
Revenue	$4.77B +18.8%	$4.01B -8.5%	$4.39B +20.8%	$3.63B +0.3%	$3.62B +2.5%	$3.53B
Net Income	$123.3M +46.9%	$84.0M -67.1%	$254.8M +66.7%	$152.9M -69.4%	$500.2M +38.4%	$361.3M
Operating Income	$197.5M +18.6%	$166.6M -53.4%	$357.5M +60.5%	$222.8M -55.0%	$495.4M +1.7%	$487.0M
EPS (Diluted)	$0.85 +46.6%	$0.58 -66.1%	$1.71 +71.0%	$1.00 -68.7%	$3.19 +37.5%	$2.32
Total Assets	$5.86B +4.0%	$5.64B +0.7%	$5.60B +10.5%	$5.07B +4.2%	$4.87B +16.4%	$4.18B
Total Debt	$1.54B -0.6%	$1.54B -0.7%	$1.56B +45.6%	$1.07B +56.1%	$684.2M -0.9%	$690.2M
Operating Cash Flow	$806.1M +56.7%	$514.5M +205.7%	$168.3M +200.3%	$-167.8M -131.0%	$541.6M +9.7%	$493.7M

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Available Research

13F Pro tracks comprehensive data for CIENA CORP including:

SEC EDGAR filings (10-K, 10-Q, 8-K)

XBRL financial facts (revenue, EPS, margins)

Insider transactions (Form 4)

Institutional 13F holdings

Quality rankings (32 signals)

AI analyst debates & daily meetings

Historical financial trends

Peer comparison & sector analysis

Top Institutional Holders of CIEN

FMR LLC
$8.2B21,209,756 sh
BlackRock, Inc.
$5.2B13,373,787 sh
VANGUARD CAPITAL MANAGEMENT LLC
$3.6B9,169,355 sh
VANGUARD PORTFOLIO MANAGEMENT LLC
$2.9B7,369,124 sh
STATE STREET CORP
$2.4B6,309,050 sh
GEODE CAPITAL MANAGEMENT, LLC
$1.6B4,065,559 sh
Capital Research Global Investors
$1.1B2,750,050 sh
BANK OF AMERICA CORP /DE/
$758.8M1,954,632 sh
Capital World Investors
$669.6M1,724,807 sh
Jericho Capital Asset Management L.P.
$643.0M1,656,172 sh

Fund	Value	Shares
FMR LLC	$8.2B	21,209,756
BlackRock, Inc.	$5.2B	13,373,787
VANGUARD CAPITAL MANAGEMENT LLC	$3.6B	9,169,355
VANGUARD PORTFOLIO MANAGEMENT LLC	$2.9B	7,369,124
STATE STREET CORP	$2.4B	6,309,050
GEODE CAPITAL MANAGEMENT, LLC	$1.6B	4,065,559
Capital Research Global Investors	$1.1B	2,750,050
BANK OF AMERICA CORP /DE/	$758.8M	1,954,632
Capital World Investors	$669.6M	1,724,807
Jericho Capital Asset Management L.P.	$643.0M	1,656,172

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Is CIEN a good stock to buy?

13F Pro's AI-powered analysis of CIENA CORP (CIEN) draws on SEC EDGAR-sourced fundamentals, institutional 13F holdings, and insider Form 4 transactions in the Technology sector (listed on NYSE). The 32-signal AI Quality Score, current rank, and full bull/bear verdict for CIEN are available on the CIEN stock profile dashboard — with the same data, AI insights, ratios, and institutional activity refreshed after every 10-K, 10-Q, 13F, and Form 4 filing.

Which hedge funds own CIEN?

Institutional investors are required to disclose their holdings quarterly via SEC Form 13F. 13F Pro aggregates these filings to show which hedge funds, mutual funds, and asset managers are buying or selling CIEN. Combined with insider transaction data from Form 4 filings and AI-powered analysis from 10 specialized research agents, 13F Pro provides a comprehensive view of CIENA CORP's investment landscape.