GATEWAY INVESTMENT ADVISERS LLC's ownership history for BIIB

GATEWAY INVESTMENT ADVISERS LLC currently holds 50.9K shares with a market value of $9.3M. It started holding BIIB on 2024-09-30. At its peak, it held 50.9K shares on 2026-03-31. Its highest holding value was $9.3M on 2026-03-31. At its lowest, it held 40.5K shares on 2025-06-30, with a value of $5.1M on 2025-06-30. In the recent 180 days, GATEWAY INVESTMENT ADVISERS LLC has increased its shares by 8.6K. In the recent year, GATEWAY INVESTMENT ADVISERS LLC has increased its shares by 9.7K.