PRIMECAP MANAGEMENT CO/CA/'s ownership history for CIEN

PRIMECAP MANAGEMENT CO/CA/ currently holds 438.1K shares with a market value of $170.1M. It started holding CIEN on 2024-09-30. At its peak, it held 587.2K shares on 2025-09-30. Its highest holding value was $170.1M on 2026-03-31. At its lowest, it held 127.5K shares on 2024-09-30, with a value of $7.9M on 2024-09-30. In the recent 180 days, PRIMECAP MANAGEMENT CO/CA/ has decreased its shares by 149.2K. In the recent year, PRIMECAP MANAGEMENT CO/CA/ has decreased its shares by 40.5K.