WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's ownership history for CIEN

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC currently holds 398.6K shares with a market value of $154.7M. It started holding CIEN on 2025-03-31. At its peak, it held 2.7M shares on 2025-06-30. Its highest holding value was $355.6M on 2025-09-30. At its lowest, it held 398.6K shares on 2026-03-31, with a value of $121.2M on 2025-03-31. In the recent 180 days, WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC has decreased its shares by 2.0M. In the recent year, WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC has decreased its shares by 1.6M.