CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's ownership history for BIIB

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM currently holds 220.7K shares with a market value of $40.5M. It started holding BIIB on 2024-09-30. At its peak, it held 238.7K shares on 2025-06-30. Its highest holding value was $44.7M on 2024-09-30. At its lowest, it held 220.7K shares on 2026-03-31, with a value of $30.0M on 2025-06-30. In the recent 180 days, CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM has decreased its shares by 14.1K. In the recent year, CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM has decreased its shares by 9.8K.