Score Breakdown
Offering Ability
19
Cash Runway—
Float Risk
2
Warrant Exposure
15
Convertible Debt
15
Dilution Forecast
☀️
Clear
No significant dilution signals
model est. 0%
No significant dilution signals detected for CIEN.
Market Data
Market Cap$82.04B
Shares Outstanding141.55M
Float140.73M
Cash$1.20B
Debt$1.53B
Short InterestN/A
Institutional Holdings
QoQ: ↓ 2.0% shares (2026Q1 vs prior)
1085 institutional holders · 156.32M shares
#1
FMR LLC
21.21M shares
#2
VANGUARD CAPITAL MANAGEMENT LLC
18.34M shares
#3
BlackRock, Inc.
13.37M shares
+ 17 more holders Sign up free to view →
Institutional holder totals are aggregated from ownership filings and may use a different share basis or reporting date than public float. They are not a reconciliation against tradeable float.
Short Interest
Short Interest3.71M
Days to Cover1.6
% of Float2.6%
FINRA data as of Jul 31, 2026
Recent SEC Activity
xbrl
XBRL CONVERTIBLE
2022-07-30
4
INSIDER TRANSACTION
2026-03-04
4
INSIDER TRANSACTION
2026-02-19
4
INSIDER TRANSACTION
2026-02-19
4
INSIDER TRANSACTION
2026-01-20
Full SEC filing analysis available with free account →
Recent News
No recent news
Factual CIEN Dilution Snapshot
Ciena Corporation (CIEN) has a DilutionScore of 10/100, rated Low dilution risk. Score date: August 28, 2026.
- Recent SEC activity tracked for CIEN: 4 on 2026-03-04; 4 on 2026-02-19; 4 on 2026-02-19.
- Score coverage note: Cash Runway is marked not applicable or unavailable while debt exceeds cash in stored market data; do not read the overall score as a complete balance-sheet risk assessment.
This automatically generated snapshot is assembled from stored DilutionWatch data fields and may contain data-source errors or omissions. It is not financial advice, not investment research, and not a recommendation. Do your own research and review the full disclaimer and terms of service.
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Score Coverage Note
- Cash Runway is marked not applicable or unavailable while debt exceeds cash in stored market data; do not read the overall score as a complete balance-sheet risk assessment.