STATE OF MICHIGAN RETIREMENT SYSTEM's ownership history for BIIB

STATE OF MICHIGAN RETIREMENT SYSTEM currently holds 43.1K shares with a market value of $6.0M. It started holding BIIB on 2024-09-30. At its peak, it held 291.3K shares on 2025-06-30. Its highest holding value was $36.6M on 2025-06-30. At its lowest, it held 39.7K shares on 2024-09-30, with a value of $5.4M on 2025-03-31. In the recent 180 days, STATE OF MICHIGAN RETIREMENT SYSTEM has increased its shares by 3.4K. In the recent year, STATE OF MICHIGAN RETIREMENT SYSTEM has increased its shares by 3.4K.