GILDER GAGNON HOWE & CO LLC's ownership history for BIIB

GILDER GAGNON HOWE & CO LLC currently holds 4.6K shares with a market value of $835.6K. It started holding BIIB on 2026-03-31. At its peak, it held 4.6K shares on 2026-03-31. Its highest holding value was $835.6K on 2026-03-31. At its lowest, it held 4.6K shares on 2026-03-31, with a value of $835.6K on 2026-03-31.