Ciena Corp (CIEN) Institutional Ownership

Ownership Summary

Ciena Corp (NYSE:CIEN) currently has 680 active institutional owners and shareholders as of today (September 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• Institutional ownership in Ciena edged up to 97.9% in September 2025, compared to 94.8% in June 2025.
• On a quarter-over-quarter basis, institutional holdings shifted by 1.18%, with a year-over-year an increase of 47.19% in the count of filers.
• Among the 680 institutional holders of Ciena, 356 added to their stakes while 255 trimmed their positions and 69 held steady.
• This class of investors increased its holdings in Ciena to 140.70Mn shares for the 13F-cycle ending September 2025, up by 1.64Mn shares quarter on quarter, and down 2.00Mn shares year over year.
• With 21.16Mn shares, FMR LLC commands the largest institutional position in Ciena as of September 30, 2025, equating to 14.72% of the company.
• Among the most significant buyers of Ciena during September 2025 were PRICE T ROWE ASSOCIATES INC /MD/ (2.39Mn), LONE PINE CAPITAL LLC (2.01Mn), JPMORGAN CHASE & CO (1.22Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.09Mn), CITADEL ADVISORS LLC (1.09Mn).
• Leading sellers of Ciena stock in September 2025 included Point72 Asset Management, L.P. (2.17Mn), BARROW HANLEY MEWHINNEY & STRAUSS LLC (2.09Mn), BlackRock, Inc. (1.47Mn), Ion Asset Management Ltd. (999.34K), Senvest Management, LLC (787.70K).
• The top 10 institutional holders of Ciena for the quarter ending September 2025 included FMR LLC (21.16Mn), BlackRock, Inc. (15.60Mn), VANGUARD GROUP INC (15.07Mn), JPMORGAN CHASE & CO (6.46Mn), STATE STREET CORP (4.35Mn), BANK OF AMERICA CORP /DE/ (3.13Mn), PRICE T ROWE ASSOCIATES INC /MD/ (2.65Mn), GEODE CAPITAL MANAGEMENT, LLC (2.54Mn), BNP Paribas Asset Management Holding S.A. (2.51Mn), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (2.44Mn).