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Ciena Corporation shares owned by Portolan Capital Management

Quarter-by-quarter ownership of Ciena Corporation (CIEN) shares owned by Portolan Capital Management from 13F filings

Historical chart of Portolan Capital Management investment in Ciena Corporation

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All positions including Ciena Corporation held by Portolan Capital Management consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Ciena Corporation by Portolan Capital Management

Quarter filed Position value Share count Share price at filing
2025-09-30 $13M 89k 145.67

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View all positions for Portolan Capital Management

Top funds holding Ciena Corporation

FMR
BlackRock
Vanguard Group
Jpmorgan Chase & Co
State Street Corporation
Geode Capital Management
Bnp Paribas Investment Partners
William Blair Investment Management
Barrow, Hanley, Mewhinney & Strauss
Lone Pine Capital
Dimensional Fund Advisors
Jericho Capital Asset Management
Morgan Stanley
Capital World Investors
Citadel Advisors

View all funds holding Ciena Corporation