Latest revenue
$1.43B
as of 2026-01-31
Latest net income
$150.3M
as of 2026-01-31
Net margin
10.5%
as of 2026-01-31
Price · 5Y
Live market
delayed ≤15 min- Market cap
- $82.54B
- Enterprise value
- $82.54B
- P/E (trailing)
- 669.2×
- Forward P/E
- —
- P/B
- —
- Dividend yield
- 0.0%
- 52-wk high
- $599.50
- 52-wk low
- $70.77
- Beta
- —
- Shares out
- 141.4M
5-year trend
What this company does
Item 1. Business Overview We are a network technology company, providing hardware, software, and services to a wide range of network operators and enabling enhanced network capacity, service delivery, and automation. Our solutions support network traffic across a wide range of applications, including cloud, voice, video, data, and artificial intelligence (“AI”). Our network solutions are used globally by cloud providers, service providers, and other network operators across multiple industry verticals. Our Networking Platforms, including our Optical Networking portfolio and Routing and Switching portfolio, are solutions applied from the network core to end user access points and allow…
AI summary unavailable — showing raw filing excerpt
Generated from CIEN's filing dated 2025-12-12
Key risks
Table of Contents Item 1A. Risk Factors Investing in our securities involves a high degree of risk. Before investing in our securities, you should consider carefully the information contained in this report, including the information in this “Risk Factors” section. Risks Related to Financial Performance and Strategy Our revenue, gross margin, and operating results can be adversely impacted by a number of factors that would cause our results to fluctuate. Our results of operations are subject to significant, and often difficult to predict, quarterly fluctuations due to a variety of factors. A portion of our quarterly revenue is generated from customer orders received during that same quarter…
AI summary unavailable — showing raw filing excerpt
Generated from CIEN's filing dated 2025-12-12
Profitability
Gross margin
42.0%
1.9%Operating margin
4.1%
0.2%Net margin
2.6%
23.7%Return on equity
4.5%
53.3%Return on assets
2.1%
41.3%Leverage
Debt / equity
1.15×
17.2%Long-term debt / equity
0.56×
3.8%Debt / assets
53.5%
8.0%Earnings tracker
| Quarter | Revenue | YoY | Net income | YoY | Net margin |
|---|---|---|---|---|---|
Q1 2026 2026-01-31 | $1.43B | +33.1% | $150.3M | +237.2% | 10.5% |
Q4 2025 2025-11-01 | $1.35B | +20.3% | $19.5M | -47.4% | 1.4% |
Q3 2025 2025-08-02 | $1.22B | +29.4% | $50.3M | +253.5% | 4.1% |
Q2 2025 2025-05-03 | $1.13B | +23.6% | $9.0M | +153.2% | 0.8% |
Q1 2025 2025-02-01 | $1.07B | +3.3% | $44.6M | -10.0% | 4.2% |
Q4 2024 2024-11-02 | $1.12B | — | $37.0M | — | 3.3% |
Q3 2024 2024-07-27 | $942.3M | -11.8% | $14.2M | -52.1% | 1.5% |
Q2 2024 2024-04-27 | $910.8M | — | $-16.8M | — | -1.8% |
Year-over-year change vs the same fiscal quarter one year prior. Revenue + net income sourced from SEC 10-Q / 10-K filings — no analyst-consensus dependency.
Industry trend
Telephone & Telegraph Apparatus · SIC 3661
Your notes
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Insider activity
Insider buying
$0
Insider selling
$81.4M
Net activity
−$81.4M
Distinct insiders
10
Open-market trades over the last 365 days.
Recent transactions
Source: SEC Form 4 filings. Officers, directors, and 10%+ owners must disclose share transactions within two business days. RSU grants and tax-withholding rows are excluded by default — compensation activity is not a trading signal.
Who owns CIEN
Institutional value
$22.50B
Total shares held
59.2M
Distinct holders
740
As of
2026-03-31
Filers with $100M+ AUM disclose holdings 45 days after quarter end.
Top institutional holders
| # | Manager | Shares | Value | QoQ change | Action |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 13.4M | $5.19B | — | New |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 9.2M | $3.56B | — | New |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 7.4M | $2.86B | — | New |
| 4 | Capital Research Global Investors | 2.8M | $1.07B | — | New |
| 5 | Capital World Investors | 1.7M | $669.6M | — | New |
| 6 | Invesco Ltd. | 1.5M | $594.1M | — | New |
| 7 | Voya Investment Management LLC | 1.2M | $467.9M | — | New |
| 8 | DIMENSIONAL FUND ADVISORS LP | 1.1M | $444.7M | — | New |
| 9 | Bank of New York Mellon Corp | 926.9K | $359.8M | — | New |
| 10 | Nuveen, LLC | 844.2K | $327.7M | — | New |
| 11 | VANGUARD FIDUCIARY TRUST CO | 793.4K | $308.0M | — | New |
| 12 | Legal & General Group Plc | 648.4K | $251.7M | — | New |
| 13 | UBS Group AG | 648.2K | $251.7M | — | New |
| 14 | DEUTSCHE BANK AG\ | 527.9K | $204.9M | — | New |
| 15 | PRIMECAP MANAGEMENT CO/CA/ | 438.1K | $170.1M | — | New |
| 16 | FIRST TRUST ADVISORS LP | 436.9K | $169.6M | — | New |
| 17 | BNP PARIBAS FINANCIAL MARKETS | 423.8K | $164.5M | — | New |
| 18 | Swiss National Bank | 413.3K | $160.5M | — | New |
| 19 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 398.6K | $154.7M | — | New |
| 20 | Assenagon Asset Management S.A. | 364.5K | $141.5M | — | New |
Source: SEC Form 13F-HR. Positions aggregated across sub-managers within each firm. Options (puts/calls) excluded — common stock only.
Top questions investors are asking
Coming once CIEN's latest filing finishes processing.