90 /100
LOW RISK
Score updated Feb 27, 2026
CIEN
Ciena Corporation

DilutionScore™ measures dilution risk across 5 factors. Lower scores indicate higher risk of share dilution.

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📊 Score Breakdown
📋 Offering Ability
80
💰 Cash Runway
100
📊 Float Risk
98
⚠️ Warrant Exposure
85
🔄Convertible Debt
💹 Market Data
Market Cap$48.26B
Shares Outstanding141.46M
Float140.20M
Cash$1.31B
Debt$1.63B
Short InterestN/A
🏛 Institutional Holdings
688 institutional holders · 154.24M shares
#1 FMR LLC 21.16M shares
#2 BlackRock, Inc. 15.60M shares
#3 VANGUARD GROUP INC 15.07M shares
+ 17 more holders Sign up free to view →
📉 Short Interest
Short Interest5.95M
Days to Cover2.2
% of Float4.2%
FINRA data as of Jan 15, 2026
📁 Recent SEC Activity
xbrl XBRL CONVERTIBLE Jul 30, 2022
Full SEC filing analysis available with free account
📰 Recent News
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